Patent Publication Number: US-2020287337-A1

Title: Busway Stab Assemblies and Related Systems and Methods

Description:
RELATED APPLICATIONS 
     This is a continuation of U.S. application Ser. No. 16/277,025, filed on Feb. 15, 2019, which application is a continuation of U.S. patent application Ser. No. 15/587,731, filed on May 5, 2017, the disclosures of which are incorporated by reference in their entireties. 
    
    
     BACKGROUND 
     Busway systems typically include several elongated busway sections with busway joints between adjacent busway sections. The busway joint serves to electrically and mechanically connect the adjacent busway sections. Continuous plug-in busway systems allow for plug-in devices (e.g., outlet boxes) to be installed anywhere or substantially anywhere along the length of the busway sections. 
     SUMMARY 
     Some embodiments of the invention are directed to a plug-in device for use with a busway system including a busway housing defining a longitudinal axis. The device includes a stab base housing having first and second opposite sides, one or more stab conductors extending out of and away from the stab base housing at the first side of the stab base housing, one or more stab conductors extending out of and away from the stab base housing at the second side of the stab base housing, and a ground conductor at an upper portion of the stab base housing. The stab base housing is configured to be received through an opening at a bottom portion of the busway housing and positioned in a first position with each stab conductor extending away from the stab base housing in a direction substantially parallel to the longitudinal axis of the busway housing and with the ground conductor contacting a top wall of the busway housing. The stab base housing is configured to be rotated from the first position to a second position with each stab conductor extending away from the stab base housing in a direction substantially perpendicular to the longitudinal axis of the busway housing and with the ground conductor contacting the top wall of the busway housing. 
     The ground conductor may extend upwardly from the upper portion of the stab base housing above a top of the stab base housing. The ground conductor may be resilient and configured to deform downwardly in response to contacting the top wall of the busway housing. 
     The stab base housing may include first and second opposing walls with each of the first and second walls extending between the first and second sides of the stab base housing. The plug-in device may include a cable management member in an interior cavity of the stab base housing. The cable management member may include a central portion, a first side portion extending away from the central portion at one side thereof, and a second side portion extending away from the central portion at an opposite side thereof. The first side portion of the cable management member may be coupled to the first wall of the stab base housing and the second side portion of the cable management member may be coupled to the second wall of the stab base housing. 
     The plug-in device may include a first cable having a first end electrically connected to the ground conductor and a second, opposite end extending out of a bottom portion of the stab base housing. The cable management member central portion may define an elongate passageway. The first cable may be received in the passageway of the cable management member. 
     The one or more stab conductors extending out of and away from the stab base housing at the first side of the stab base housing may include first and second phase conductors. The one or more stab conductors extending out of and away from the stab base housing at the second side of the stab base housing may include a third phase conductor. 
     The plug-in device may include: a first cable having a first end electrically connected to the first phase conductor and a second, opposite end extending out of a bottom portion of the stab base housing; a second cable having a first end electrically connected to the second phase conductor and a second, opposite end extending out of the bottom portion of the stab base housing; and/or a third cable having a first end electrically connected to the third phase conductor and a second, opposite end extending out of the bottom portion of the stab base housing. 
     The first cable may extend external to and along one of the first and second side portions of the cable management member. The second cable may extend external to and along the other one of the first and second side portions of the cable management member. 
     The one or more stab conductors extending out of and away from the stab base housing at the second side of the stab base housing may include a third phase conductor and a neutral conductor. The plug-in device may include a fourth cable having a first end electrically connected to the neutral conductor and a second, opposite end extending out of the bottom portion of the stab base housing. The third cable may extend along one of the first and second side portions of the cable management member. The fourth cable may extend along the other one of the first and second side portions of the cable management member. 
     The first and second side portions of the cable management member may each include a laterally extending side with first face and a second opposite face. The first cable may extend along the first face of one of the first and second side portions of the cable management member. The third cable may extend along the second face of one of the first and second side portions of the cable management member. 
     In some embodiments, an enclosure is coupled to a lower portion of the stab base housing. A cable may extend from each stab conductor and from the ground conductor to outside the stab base housing at the lower portion thereof. Each cable may be electrically connected to components in the enclosure. 
     In some embodiments, each stab conductor is L-shaped with a first portion and a second portion that is perpendicular to the first portion. The first portion of each stab conductor may extend out of and away from the stab base housing. The second portion of each stab conductor may be at least partially held in a channel defined in the stab base housing. 
     Some other embodiments of the invention are directed to a busway system. The system includes a busway section. The busway section includes a busway housing defining a longitudinal axis, with the busway housing including first and second opposite side portions. The busway section includes a first insulator held in the first side portion of the busway housing, with the first insulator holding one or more bus bar conductors. The busway section includes a second insulator held in the second side portion of the busway housing, with the second insulator holding one or more bus bar conductors. The system includes a plug-in device. The plug-in device includes a stab base housing having first and second opposite sides, one or more stab conductors extending out of and away from the stab base housing at the first side of the stab base housing, one or more stab conductors extending out of and away from the stab base housing at the second side of the stab base housing, and a ground conductor extending upwardly out of an opening at an upper portion of the stab base housing. The stab base housing is configured to be received through an opening at a bottom portion of the busway housing and positioned in a first position with each stab conductor extending away from the stab base housing in a direction substantially parallel to the longitudinal axis of the busway housing and the ground conductor contacting a top wall of the busway housing. The stab base housing is configured to be rotated from the first position to a second position with each stab conductor extending away from the stab base housing in a direction substantially perpendicular to the longitudinal axis of the busway housing to electrically connect each stab conductor with one of the bus bar conductors. 
     In some embodiments, the ground conductor extends above a top of the stab base housing and is resilient and configured deform upwardly and downwardly in response to contacting the top wall of the busway housing. 
     A cable management member may be positioned in an interior cavity of the stab base housing. The ground conductor may include an arcuate center portion and first and second side portions that are attached to the stab base housing above the cable management member. A first cable may be electrically connected to the lower surface of the ground conductor. The first cable may extend downwardly through a channel defined in a central portion of the cable management member and out of a lower portion of the stab base housing. 
     The one or more stab conductors extending out of and away from the stab base housing at the first side of the stab base housing may include first and second phase conductors. The one or more stab conductors extending out of and away from the stab base housing at the second side of the stab base housing may include a third phase conductor. The cable management member may include a first side portion extending outwardly away from a first side of the central portion and a second side portion extending outwardly away from a second, opposite side of the central portion. A second cable may be electrically connected to a the first phase conductor, a third cable may be electrically connected to the second phase conductor, and a fourth cable may be electrically connected to the third phase conductor. The second cable may extend along a first face of the first side portion of the cable management member and out of the lower portion of the stab base housing. The third cable may extend along a first face of the second side portion of the cable management member and out of the lower portion of the stab base housing. The fourth cable may extend along either a second, opposite face of the first side portion of the cable management member or a second, opposite face of the second side portion of the cable management member and out of the lower portion of the stab base housing. 
     Each bus bar conductor held in the first insulator may include an upper portion and an opposite lower portion. Each bus bar conductor held in the second insulator may include an upper portion and an opposite lower portion. In the second position, each one of the stab conductors extending out of and away from the stab base housing at the first side of the stab base housing may be received between and contact the upper and lower portions of one of the bus bar conductors held in the first insulator to be electrically connected therewith. In the second position, each one of the stab conductors extending out of and away from the stab base housing at the second side of the stab base housing may be received between and contact the upper and lower portions of one of the bus bar conductors held in the second insulator to be electrically connected therewith. 
     In some embodiments, each of the stab conductors includes an end portion that is tapered such that the end portion narrows in thickness from a central portion to an end of the stab conductor. 
     The stab base housing may include a first alignment tab on the first side of the stab base housing and a second alignment tab on the second side of the stab base housing. The first alignment tab may have a first length and the second alignment tab may have a second length that is greater than the first length. The busway housing may include a first channel and a second channel at the bottom portion of the busway housing. The first channel may have a first depth and the second channel may have a second depth that is greater than the first depth. The first alignment tab may be received in the first channel and the second alignment tab may be received in the second channel when the stab base housing is in the second position. 
     Some other embodiments of the invention are directed to a method. The method includes providing a busway section. The busway section includes: a busway housing defining a longitudinal axis, with the busway housing including first and second opposite side portions; a first insulator held in the first side portion of the busway housing, with the first insulator holding one or more bus bar conductors; and a second insulator held in the second side portion of the housing, with the second insulator holding one or more bus bar conductors. The method includes providing a plug-in device. The plug-in device includes: a stab base housing having first and second opposite sides; one or more stab conductors extending out of and away from the stab base housing at the first side of the stab base housing; one or more stab conductors extending out of and away from the stab base housing at the second side of the stab base housing; and a ground conductor extending upwardly out of an opening at a top of the stab base housing. The method includes receiving the stab base housing through an opening at a bottom portion of the busway housing in a first position with each stab conductor extending away from the stab base housing in a direction substantially parallel to the longitudinal axis of the busway housing and with the ground conductor contacting a top wall of the busway housing. The method includes rotating the stab base housing from the first position to a second position with each stab conductor extending away from the stab base housing in a direction substantially perpendicular to the longitudinal axis of the busway housing. 
     In some embodiments, rotating the stab base housing from the first position to the second position includes electrically connecting each one of the stab conductors to one of the bus bar conductors. 
     Further features, advantages and details of the present invention will be appreciated by those of ordinary skill in the art from a reading of the figures and the detailed description of the preferred embodiments that follow, such description being merely illustrative of the present invention. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view of a stab base assembly according to some embodiments. 
         FIG. 2  is another perspective view of the stab base assembly of  FIG. 1 . 
         FIG. 3  is a front view of the stab base assembly of  FIG. 1 . 
         FIG. 4  is a side view of the stab base assembly of  FIG. 1 . 
         FIG. 5  is a perspective view of a first housing portion of the stab base assembly of  FIG. 1 . 
         FIG. 6  is a side view of the first housing portion of  FIG. 5 . 
         FIG. 7  is a perspective view of a second housing portion of the stab base assembly of  FIG. 1 . 
         FIG. 8  is a side view of the second housing portion of  FIG. 7 . 
         FIG. 9  is a perspective view of a cable management member according to some embodiments. 
         FIG. 10  is a top view of the cable management member of  FIG. 9 . 
         FIG. 11  is a perspective view of a stab conductor according to some embodiments. 
         FIGS. 12A-12C  illustrate arrangements for electrically connecting a cable and a stab conductor according to various embodiments. 
         FIG. 13  is a sectional view of the stab base assembly of  FIG. 1 . 
         FIG. 14  is a perspective view of a ground conductor according to some embodiments. 
         FIG. 15  illustrates a cable electrically connected to the ground conductor of  FIG. 14 . 
         FIG. 16  is a sectional view of the stab base assembly of  FIG. 1 . 
         FIG. 17  is a perspective view of a plug-in device including the stab base assembly of  FIG. 1  according to some embodiments. 
         FIG. 18  is an exploded perspective view of a busway system according to some embodiments. 
         FIG. 19  is an exploded perspective view of a busway section according to some embodiments. 
         FIG. 20  is a perspective view of a housing of the busway section of  FIG. 19 . 
         FIG. 21  is an end view of the housing of  FIG. 20 . 
         FIG. 22  is a perspective view of an insulator of the busway section of  FIG. 19 . 
         FIG. 23  is an end view of the insulator of  FIG. 22 . 
         FIG. 24  is a perspective view of a housing holding two insulators of the busway section of  FIG. 19 . 
         FIG. 25  is a perspective view of a bus bar conductor of the busway section of  FIG. 19 . 
         FIG. 26  is an end view of the conductor of  FIG. 25 . 
         FIG. 27  is an end view of the busway section of  FIG. 19  in an assembled state. 
         FIG. 28  illustrates the plug-in device of  FIG. 17  positioned below the busway section of  FIG. 27 . 
         FIG. 29  illustrates the plug-in device positioned in the busway section of  FIG. 27  in a first position. 
         FIG. 30  illustrates the plug-in device positioned in the busway section of  FIG. 27  in a second position. 
     
    
    
     DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION 
     The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which illustrative embodiments of the invention are shown. In the drawings, the relative sizes of regions or features may be exaggerated for clarity. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. 
     It will be understood that when an element is referred to as being “coupled” or “connected” to another element, it can be directly coupled or connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being “directly coupled” or “directly connected” to another element, there are no intervening elements present. Like numbers refer to like elements throughout. As used herein the term “and/or” includes any and all combinations of one or more of the associated listed items. 
     In addition, spatially relative terms, such as “under”, “below”, “lower”, “over”, “upper” and the like, may be used herein for ease of description to describe one element or feature&#39;s relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, elements described as “under” or “beneath” other elements or features would then be oriented “over” the other elements or features. Thus, the exemplary term “under” can encompass both an orientation of over and under. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. 
     Well-known functions or constructions may not be described in detail for brevity and/or clarity. 
     The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises,” “includes,” “comprising,” and/or “including,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. 
     It is noted that any one or more aspects or features described with respect to one embodiment may be incorporated in a different embodiment although not specifically described relative thereto. That is, all embodiments and/or features of any embodiment can be combined in any way and/or combination. Applicant reserves the right to change any originally filed claim or file any new claim accordingly, including the right to be able to amend any originally filed claim to depend from and/or incorporate any feature of any other claim although not originally claimed in that manner. These and other objects and/or aspects of the present invention are explained in detail in the specification set forth below. 
     Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. 
     In some embodiments, the term “substantially” when used in connection with a claimed angular relationship includes angles that are ±5° of the claimed angular relationship. In some other embodiments, the term “substantially” when used in connection with a claimed angular relationship includes angles that are ±3° of the claimed angular relationship. For example, an object that extends in a direction that is substantially perpendicular to an axis may form an angle with the axis that is between 85 and 95° or between 87 and 93° in various embodiments. 
     A stab base assembly  10  according to some embodiments is illustrated in  FIGS. 1-4 . The assembly  10  includes a stab base housing  12 . The housing  12  includes first and second opposite sides  14 ,  16  and third and fourth opposite sides  18 ,  20 . The first and second sides  14 ,  16  may be parallel or substantially parallel to one another. The third and fourth sides  18 ,  20  may be parallel or substantially parallel to one another. The third and fourth sides  18 ,  20  may also be perpendicular or substantially perpendicular to each of the first and second sides  14 ,  16 . 
     The stab base housing  12  may be formed of an electrically insulating material. According to some embodiments, the housing  12  is formed of a polycarbonate or a thermoplastic polycarbonate. The housing  12  may be formed of Lexan™ available from SABIC (e.g., Lexan 3412ECR). 
     A plurality of stabs (or stab conductors) are held by the housing  12  and extend away from the housing  12 . As described in more detail below, the stabs  22 ,  24 ,  26 ,  32 ,  34 ,  36  may be L-shaped or substantially L-shaped and include first portions  22 A,  24 A,  26 A,  32 A,  34 A,  36 A and second portions  22 B,  24 B,  26 B,  32 B,  34 B,  36 B. The first portions  22 A,  24 A,  26 A of the stabs  22 ,  24 ,  26  may extend away from the first side  14  of the housing  12  and the first portions  32 A,  34 A,  36 A of the stabs  32 ,  34 ,  36  may extend away from the second side  16  of the housing  12 . 
     As described in more detail below, the stabs  22 ,  24 ,  26  may be held in channels  42 ,  44 ,  46  defined in the housing  12  and may extend out of openings  42   o ,  44   o ,  46   o  at the end of the channels  42 ,  44 ,  46  at the first side  14  of the housing  12 . Similarly, the stabs  32 ,  34 , and  36  may be held in channels  52 ,  54 ,  56  defined in the housing  12  and may extend out of openings  52   o ,  54   o ,  56   o  at the end of the channels  52 ,  54 ,  56  at the second side  16  of the housing  12 . 
     The stabs  22 ,  24 ,  26 ,  32 ,  34 ,  36  may be formed of an electrically conductive material. According to some embodiments, the stabs  22 ,  24 ,  26 ,  32 ,  34 ,  36  are formed of or include copper or aluminum. 
     Each of the first portions  22 A,  24 A,  26 A,  32 A,  34 A,  36 A of the stabs  22 ,  24 ,  26 ,  32 ,  34 ,  36  may include a tapered end portion  22   t ,  24   t ,  26   t ,  32   t ,  34   t ,  36   t  such that the stab narrows in thickness from a central portion of the stab first portion to a distal end thereof. 
     The housing  12  includes a top or upper portion  28  and a bottom or lower portion  30 . An opening  70  is defined in the upper portion  28  of the housing  12 . A ground stab (or ground conductor)  72  extends outwardly and upwardly from the opening  70 . The ground conductor  72  extends upwardly above a top  29  of the housing  12 . The ground conductor  72  may be resilient (e.g., allow some deformation in the upward and downward directions). The ground conductor  72  may be formed of any suitable electrically conductive material, e.g., copper or aluminum. 
     Each stab conductor  22 ,  24 ,  26 ,  32 ,  34 ,  36  and the ground conductor  72  may include a cable or wire lead  23 ,  25 ,  27 ,  33 ,  35 ,  37 ,  73  associated therewith. Each cable  23 ,  25 ,  27 ,  33 ,  35 ,  37 ,  73  may extend from its associated conductor to outside the housing  12  at the lower portion  30  thereof. More specifically, each cable  23 ,  25 ,  27 ,  33 ,  35 ,  37 ,  73  may include a first end that is attached (e.g., brazed, welded, mechanically crimped, etc.) to its associated conductor and a second, opposite end that extends out the lower portion  30  of the housing  12  (e.g., out of one or more openings at the lower portion  30  of the housing  12 ). As described in more detail below, the second end of each cable may be connected to an enclosure that, along with the stab base assembly  10 , forms a plug-in device or unit (e.g., the plug-in device or unit  120  shown in  FIG. 17 ). 
     The stabs  22 ,  24 , and  32  may be phase conductors for a three-phase circuit or system. For example, the stab  22  may be an A phase conductor, the stab  24  may be a B phase conductor, and the stab  32  may be a C phase conductor. 
     The stabs  26 ,  34  and/or  36  may be omitted in some embodiments. Where used, the stab  26  may be a ground conductor for a 200% ground rating. Where used, the stab  34  may be a neutral conductor. Where used in combination with the stab  34 , the stab  36  may be a neutral conductor for a 200% neutral rating. 
     The stab base housing  12  may include at least one alignment feature, shown as first and second alignment tabs  64 ,  66 . The first alignment tab  64  may extend outwardly away from the first side  14  of the housing  12  and a second alignment tab  66  may extend outwardly away from the second side  16  of the housing  12 . The first tab  64  may have a first length L 1  and the second tab  66  may have a second length L 2 . The second length L 2  may be greater than the first length L 1 . 
     A coupling feature, such as first and second flanges  76 ,  78  may reside at the lower portion  30  of the housing  12 , typically below the alignment tabs  64 ,  66 . As illustrated, the first flange  76  extends outwardly away from the third side  18  of the housing  12  and the second flange  78  extends outwardly away from the fourth side  20  of the housing  12 . Each flange  76 ,  78  may have an aperture defined therein to facilitate connection of the stab base assembly  10  to an enclosure (see, e.g., the aperture  76   a  shown in  FIG. 17 ). 
     The stab base housing  12  according to some embodiments is shown in more detail in  FIGS. 5-8 . The housing  12  may be a two-piece housing and includes a first housing portion  12 A and a second housing portion  12 B. The first housing portion  12 A includes a plurality of first coupling features  80  and the second housing portion  12 B includes a plurality of second coupling features  82 . The first and second coupling features  80 ,  82  are configured to cooperate such that the first and second housing portions  12 A,  12 B can be coupled together as shown in  FIGS. 1-4 . For example, the first coupling features  80  may include a plurality of apertures  80   a  and the second coupling features  82  may include a plurality of apertures  82   a  that can be aligned with the first plurality of apertures  80   a  and a fastener (e.g., a polymeric fastener) may be received through the aligned apertures to couple the first and second housing portions  12 A,  12 B. Other coupling features are contemplated (as just one example, one of the housing portions  12 A,  12 B may include one or more receptacles and the other of the housing portions  12 A,  12 B may include one or more plugs or posts that may be received in the receptacles with an interference fit to couple the first and second housing portions  12 A,  12 B). The first and second housing portions  12 A,  12 B may additionally or alternatively be coupled by adhesive bonding. 
     Referring to  FIGS. 5 and 6 , first housing portion  12 A includes first through sixth channel portions  42 A,  44 A,  46 A,  52 A,  54 A and  56 A. Referring to  FIGS. 7 and 8 , the second housing portion  12 B includes first through sixth channel portions  42 B,  44 B,  46 B,  52 B,  54 B and  56 B. When the first and second housing portions  12 A,  12 B are coupled, the channel portions  42 A,  42 B combine to define the first channel  42 , the channel portions  44 A,  44 B combine to define the second channel  44 , the channel portions  46 A,  46 B combine to define the third channel  46 , the channel portions  52 A,  52 B combine to define the fourth channel  52 , the channel portions  54 A,  54 B combine to define the fifth channel  54 , and the channel portions  56 A,  56 B combine to define the sixth channel  56  ( FIG. 16 ). One or more of the channels  42 ,  44 ,  46 ,  52 ,  54 ,  56  may be L-shaped or substantially L-shaped. The openings  42   o ,  44   o ,  46   o ,  52   o ,  54   o  and  56   o  ( FIGS. 1 and 2 ) are defined at the end of the channels  42 ,  44 ,  46 ,  52 ,  54  and  56 , respectively. 
     The first housing portion  12 A includes a recess  70 A at an upper portion thereof. First and second opposite groove portions  84 A,  86 A are defined in the first housing portion  12 A adjacent the recess  70 A. The second housing portion  12 B includes a recess  70 B at an upper portion thereof. First and second opposite groove portions  84 B,  86 B are defined in the second housing portion  12 B adjacent the recess  70 B. When the first and second housing portions  12 A,  12 B are coupled, the recesses  70 A,  70 B combine to define the opening  70  ( FIG. 1 ), the first groove portions  84 A,  84 B combine to define a first groove  84  adjacent the opening  70  ( FIG. 16 ), and the second groove portions  86 A,  86 B combine to define a second groove  86  adjacent the opening  70  ( FIG. 16 ). The grooves  84 ,  86  can hold ends of the ground conductor  72  ( FIG. 14 ). 
     One or more cavities or depressions  88 A and a slot  90 A may be defined in the first housing portion  12 A ( FIG. 6 ). The cavities or depressions  88 A and slot  90 A may be defined in a wall  18 W at the third side portion  18  of the stab base housing  12  ( FIG. 4 ). One or more cavities or depressions  88 B and a slot  90 B may be defined in the second housing portion  12 B ( FIG. 8 ). The cavities or depressions  88 B and slot  90 B may be defined in a wall  20 W at the fourth side portion  20  of the stab base housing  12  ( FIG. 4 ). When the first and second housing portions  12 A,  12 B are coupled, the walls  18 W and  20 W face one another. 
     A cable or wire management member  92  is illustrated in  FIGS. 9 and 10 . The cable management member  92  includes a central portion or post  94  and first and second opposite lateral or side portions (or wings)  96 ,  98  that extend outwardly away from the central portion  94 . The central portion  94  has a height or length L 3  and the first and second side portions  96 ,  98  may extend along the entire length L 3  of the central portion  94 . 
     The central portion  94  defines a channel or passageway  94   c  that extends the entire length L 3  of the central portion  94 . The central portion  94  may be tubular. 
     The first side portion  96  includes a first face or surface  96   a  and an opposite second face or surface  96   b . The first side portion  96  includes an outer edge  96   e . The second side portion  98  includes a first face or surface  98   a  and an opposite second face or surface  98   b . The second side portion includes an outer edge  98   e.    
     The first side portion  96  includes a leg  96 L that extends downwardly below the central portion  94  on one side of the central portion  94  and the second side portion  98  includes a leg  98 L that extends downwardly below the central portion  94  on the opposite side of the central portion  94 . A recess  100  may be defined between the legs  96 L and  98 L. 
     One or more projections  102 A may be on the outer edge  96   e  of the first side portion  96  and one or more projections  102 B may be on the outer edge  98   e  of the second side portion  98 . A foot  104 A may be on the leg  96 L and a foot  104 B may be on the leg  98 L. 
     The cable management member  92  is held within an interior chamber  12   c  of the stab base housing  12  ( FIG. 16 ). More specifically, referring to  FIGS. 5-10 , the projection(s)  102 A may be received in the depression(s)  88 A of the first housing portion  12 A and the projection(s)  102 B may be received in the depression(s)  88 B of the second housing portion  12 B. Also, the foot  104 A may be received in the slot  90 A of the first housing portion  12 A and the foot  104 B may be received in the slot  90 B of the second housing portion  12 B. These features along with the dimensions (e.g., width) of the housing  12  and the cable management member  92  may allow the cable management member  92  to be held tightly in the interior chamber  12   c  of the housing  12 . 
     With reference to  FIGS. 4-10 , the outer edge  96   e  of the first side portion  96  of the cable management member  92  may be at the third side portion  18  of the housing  12  and the outer edge  98   e  of the second side portion  98  of the cable management member  92  may be at the fourth side portion  20  of the housing  12 . Therefore, the cable management member  92  may extend from the third side portion  18  to the fourth side portion  20  of the housing  12  in the interior cavity  12   c  thereof. 
     As will be described in more detail below, the cable management member  92  may facilitate guidance and/or management of one or more of the cables or wires extending from one or more of the stab conductors and/or from the ground conductor. 
     The stab conductor  22  is illustrated in  FIG. 11 . The stab conductors  22 ,  24 ,  26 ,  32 ,  34 ,  36  may each have the same structure; accordingly, in the interest of brevity, only the stab conductor  22  will be described in detail below. 
     As described above, the stab conductor  22  includes first and second portions  22 A,  22 B. The first portion  22 A may be perpendicular or substantially perpendicular to the second portion  22 B. The stab conductor second portion  22 B includes first and second opposite faces  22 B 1  ( FIG. 12A ) and  22 B 2 . The stab second portion  22 B includes a lower edge  22 BL and first and second opposite side edges  22 BS 1  and  22 BS 2 . 
     Referring to  FIG. 16 , a first upwardly extending channel  42  is defined in part by a first vertical wall  42 V 1  and a second vertical wall  42 V 2  (the channel  42  is further defined by a ledge  42 C and a horizontal wall  42 D). The first vertical wall  42 V 1  is shorter than the second vertical wall  42 V 2  so that a vertical gap G is provided between the first and second vertical walls  42 V 1 ,  42 V 2 . 
     With reference to  FIGS. 11, 12A and 16 , the stab conductor  22  is held in the channel  42  with the second face  22 B 2  facing (and possibly abutting) the second vertical wall  42 V 2 . A portion of the first face  22 B 1  faces (and possibly abuts) the first vertical wall  42 V 1 . A lower portion of the first face  22 B 1  is exposed at the vertical gap G. This facilitates electrical connection with the cable or lead wire as will be described in more detail below. 
     It can be seen from  FIG. 16  that the other (e.g., second through sixth) channels  44 ,  46 ,  52 ,  54 ,  56  have the same or substantially the same structure as the channel  42 . Therefore, it will be understood that the stab conductor  24  may be held in the channel  44 , the stab conductor  26  (where used) may be held in the channel  46 , the stab conductor  32  may be held in the channel  52 , the stab conductor  34  (where used) may be held in the channel  54 , and/or the stab conductor  36  (where used) may be held in the channel  56  in the same or substantially the same way as described above in connection with the stab conductor  22  and the channel  42 . 
     The stab conductor  22  with the cable  23  or the stab conductor  32  with the cable  33  is illustrated in  FIG. 12A . The cable  23  or  33  includes an inner conductor  23   c  or  33   c  that is surrounded by an electrically insulating layer  23   i  or  33   i . The cable  23  or  33  includes a first end  23   1  or  33   1  and an opposite second end  23   2  or  33   2 . The cable first end  23   1  or  33   1  is electrically connected to the stab conductor  22  or  32  by joining (e.g., brazing, welding, mechanically crimping, etc.) the inner conductor  23   c  or  33   c  with the first face  22 B 1  or  32 B 1  of the stab conductor  22  or  32 . As illustrated, the cable  23  or  33  is joined with the stab conductor  22  or  32  in a way that the cable  23  or  33  extends perpendicularly or substantially perpendicularly away from the second side edge  22 BS 2  or  32 BS 2  of the stab conductor second portion  22 B or  32 B. 
     The stab conductor  24  with the cable  25  or the stab conductor  34  with the cable  35  is illustrated in  FIG. 12B . The cable  25  or  35  includes an inner conductor  25   c  or  35   c  that is surrounded by an electrically insulating layer  25   i  or  35   i . The cable  25  or  35  includes a first end  25   1  or  35   1  and an opposite second end  25   2  or  35   2 . The cable first end  25   1  or  35   1  is electrically connected to the stab conductor  24  or  34  by joining (e.g., brazing, welding, mechanically crimping, etc.) the inner conductor  25   c  or  35   c  with the first face  24 B 1  or  34 B 1  of the stab conductor  24  or  34 . As illustrated, the cable  25  or  35  is joined with the stab conductor  24  or  34  in a way that the cable  25  or  35  extends perpendicularly or substantially perpendicularly away from the first side edge  24 BS 1  or  34 BS 1  of the stab conductor second portion  24 B or  34 B. 
     The stab conductor  26  with the cable  27  or the stab conductor  36  with the cable  37  is illustrated in  FIG. 12C . The cable  27  or  37  includes an inner conductor  27   c  or  37   c  that is surrounded by an electrically insulating layer  27   i  or  37   i . The cable  27  or  37  includes a first end  27   1  or  37   1  and an opposite second end  27   2  or  37   2 . The cable first end  27   1  or  37   1  is electrically connected to the stab conductor  26  or  36  by joining (e.g., brazing, welding, mechanically crimping, etc.) the inner conductor  27   c  or  37   c  with the first face  26 B 1  or  36 B 1  of the stab conductor  26  or  36 . As illustrated, the cable  27  or  37  is joined with the conductor  26  or  36  in a way that the cable  27  or  37  extends perpendicularly or substantially perpendicularly away from the lower edge  26 BL or  36 BL of the stab conductor second portion  26 B or  36 B. 
     Such an arrangement can facilitate efficient cable or wire management. With reference to  FIGS. 9, 10 and 13 , the uppermost cables  23 ,  33  can be routed along one of the side portions  96 ,  98  of the cable management member  92  and downwardly out of the housing  12  and the cables  25 ,  35  can be routed along the other one of the side portions  96 ,  98  of the cable management member  92  and downwardly out of the housing  12 . In some embodiments, the cables  23 ,  25 ,  33 ,  35  can be coupled (e.g., adhered) to the cable management member  92 . The cables  27 ,  37  may be routed downwardly out of the housing  12 . By routing the cables in different directions on each side of the cable management member  92  as described above, issues such as tangling or twisting of the cables can be avoided. In addition, the design provides necessary creepage and clearance distances between bare conductors. 
     It will be appreciated that alternative arrangements can provide the same or similar cable management advantages. For example, the cable  23  or  33  may be joined with the stab conductor  22  or  32  in a way that the cable  23  or  33  extends perpendicularly or substantially perpendicularly away from the first side edge  24 BS 1  or  34 BS 1  of the stab conductor second portion  22 B or  32 B. Similarly, the cable  25  or  35  may be joined with the stab conductor  24  or  34  in a way that the cable  25  or  35  extends perpendicularly or substantially perpendicularly away from the second side edge  24 BS 2  or  34 BS 2  of the stab conductor second portion  24 B or  34 B. 
     An example of the ground stab conductor  72  is illustrated in  FIG. 14 . As shown, the ground stab conductor  72  includes a center portion  72 C and first and second lateral or side portions  72 S 1 ,  72 S 2  that extend away from opposite sides of the center portion  72 C. The center portion  72 C extends upwardly above the first and second side portions  72 S 1 ,  72 S 2 . The center portion  72 C may be arcuate and/or may include a concave lower face or surface  72 CL and an opposite convex upper face or surface  72 CU. 
     The ground stab conductor  72  with the cable  73  electrically connected thereto is illustrated in  FIG. 15 . The cable  73  includes an inner conductor  73   c  and an outer electrically insulating layer  73   i . The cable  73  includes a first end  73   1  and an opposite second end  73   2 . The cable first end  73   1  is electrically connected to the ground stab conductor  72  by joining (e.g., brazing, welding, mechanically crimping, etc.) the inner conductor  73   c  with the lower surface  72 CL of the ground stab conductor  72 . 
     Referring to  FIGS. 9 and 13 , the cable  73  associated with the ground stab conductor  72  is received in and through the channel  94   c  of the cable management member  92  and extends outside the stab base housing  12  at a bottom portion thereof. This further facilitates effective cable management within the interior of the stab base housing  12 . 
     Referring to  FIGS. 14-16 , the side portions  72 S 1 ,  72 S 2  of the ground stab conductor  72  are received in the opposed grooves  84 ,  86  at the top portion of the stab base housing  12 . The center portion  72 C of the ground stab conductor  72  is received in the opening  70  at the top of the housing  12  and extends above the top  29  of the housing  12  ( FIG. 1 ). As described below, the ground conductor  72  is configured to contact an upper wall of a busway housing. The ground conductor  72  may be dome shaped. The ground conductor  72  may be resilient and configured to deflect upwardly and downwardly in response to contacting the busway housing. The ground conductor  72  may be formed of any suitable electrically conductive material, e.g., copper or aluminum. 
     A plug-in device or unit  120  is illustrated in  FIG. 17 . The plug-in device  120  includes the stab base assembly  10  coupled to a top of an enclosure  122  using the flanges  76 ,  78 . The second ends  23   2 ,  25   2 ,  27   2 ,  33   2 ,  35   2 ,  37   2 ,  73   2  of the cables  23 ,  25 ,  27 ,  33 ,  35 ,  37 ,  73  ( FIGS. 12A-12C and 15 ) may extend into and be electrically connected to components in the enclosure in an interior thereof. As described in more detail below, the plug-in device  120  is configured to be received in and electrically connected to a busway system. The plug-in device  120  may be, for example, a bus plug, an outlet box or a tap off. The plug-in device  120  may include a protective device (e.g., breaker or fused) switch  124 . 
     The stab assembly  10  and the plug-in device  120  may be used with a busway assembly or system such as the busway or bus duct system assembly  300  illustrated in  FIG. 18 . The busway assembly  300  includes first and second busway or bus duct sections  312 ,  314 . A joint assembly  316  is disposed between the first and second busway sections  312 ,  314  to couple the busway sections  312 ,  314 . The busway assembly  300  typically forms a portion of a larger busway system or busway run, and one or more additional busway sections, joint assemblies and/or other components may be included in the larger busway system. 
     The busway section  312  is illustrated in  FIG. 19 . The busway section  314  has substantially the same structure as the busway section  312 ; accordingly, in the interest of brevity, only the busway section  312  will be described in detail below. 
     The busway section  312  includes a housing  318 . The housing  318  may be formed of any suitable material such as, for example, aluminum. Referring to  FIG. 20 , the housing  318  is elongated and defines a longitudinal axis A 1 . The housing  318  has a length L 4 . The length L 3  may be between about 0.5 to 10 feet in various embodiments. 
     Referring to  FIGS. 19-21 , the housing  318  has a top or upper portion  320 , a bottom or lower portion  334 , and first and second opposing side portions  322 ,  324 . A lower ledge  326  extends inwardly from each of the side portions  322 ,  324  and extends the length L 4  of the housing  318 . The housing side portions  322 ,  324  each include a channel  332 . 
     The housing top portion  320  includes a pair of upper flanges  342  (e.g., substantially L-shaped opposed flanges) that extend from a top or upper wall  321 . The flanges  342  may be used for mounting or suspending the busway section  312 . A lower flange  344  (e.g., a substantially L-shaped flange) extends downwardly from each one of the ledges  326 . The flanges  344  may be shaped and configured to receive finger safe seals as well as access barriers, as will be described in more detail below. 
     A first one of the lower ledges  326  and a first one of the lower flanges  344  define a first channel  336  at the first side  322  and the lower portion  334  of the housing  318 . A second one of the lower ledges  326  and a second one of the lower flanges  344  define a second channel  338  at the second side  324  and the lower portion  334  of the housing  318 . The first channel  336  has a laterally extending first depth d 1  and the second channel  338  has a laterally extending second depth d 2 . The second depth d 2  of the second channel  338  may be greater (longer) than the first depth d 1  of the first channel  336 . 
     Referring again to  FIG. 19 , the busway section  312  includes first and second insulators  352 ,  354 . The first and second insulators  352 ,  354  are received in the housing  318  at the first and second side portions  322 ,  324 , respectively ( FIGS. 12 and 15 ). The insulators  352 ,  354  are continuous and may have the same length (L 5  in  FIG. 22 ) or about the same length as the length L 4  of the housing  318  ( FIG. 20 ). 
     A perspective view of the insulator  352  is shown in  FIG. 22  and an end view of the insulator  352  is shown in  FIG. 23 . When viewed from the end, the insulator  354  is a mirror image of the insulator  352 . Accordingly, in the interest of brevity, only the insulator  352  will be described in detail below. 
     Referring to  FIG. 22 , the insulator  352  includes a top or upper portion  356 , a central or middle portion  358  and a bottom or lower portion  360 . Referring to  FIGS. 22 and 23 , the insulator  352  includes an outer wall  357  that extends from the upper portion  356  to the lower portion  360  of the insulator  352 . The upper portion  356  includes an upper channel  368  that is sized and configured to receive and/or hold a conductor or bus bar. Inwardly extending projections  370 ,  372  define an opening  374  to the channel  368 . Each of the projections  370 ,  372  include a raised portion  371 ,  373  such that the channel  368  narrows between the raised portion  371 ,  373 . The outer wall  357  and the projections  370 ,  372  define the upper channel  368 . 
     The central portion  358  of the insulator  352  includes a channel  378  that is sized and configured to receive and/or hold a conductor or bus bar. Projections  380 ,  382  define an opening  384  to the channel  378 . Each of the projections  380 ,  382  include a raised portion  381 ,  383  such that the channel  378  narrows between the raised portion  381 ,  383 . The outer wall  357  and the projections  380 ,  382  define the central channel  368 . 
     The lower portion  360  of the insulator  352  includes a channel  388  sized and configured to receive and/or hold a conductor or a bus bar. The channel  388  may have the same shape and/or size as the channel  368  and/or the channel  378 . Projections  390 ,  392  define an opening  394  to the channel  388 . Each of the projections  390 ,  392  include a raised portion  391 ,  393  such that the channel  388  narrows between the raised portion  391 ,  393 . The outer wall  357  and the projections  390 ,  392  define the lower channel  388 . 
       FIG. 24  is a perspective view illustrating the insulators  352 ,  354  installed in the housing  318 . Specifically, the insulator  352  is installed at the side portion  322  of the housing  318  and the insulator  354  is installed at the opposite side portion  324  of the housing  318 . The insulators  352 ,  354  may extend continuously along the housing  318  (i.e., along the entire length L 4  or substantially the entire length L 4  of the housing  318 ). In some embodiments, the insulators  352 ,  354  are slidingly received in the housing  318  in the position shown in  FIG. 24 . The insulators  352 ,  354  may be slidingly received in the housing  318  in a direction that is parallel or substantially parallel to the housing longitudinal axis A 1  ( FIG. 20 ). 
     The housing  318  and the insulators  352 ,  354  are shaped and configured and have features such that the insulators  352 ,  354  can be aligned with the housing  318 , guided into the housing  318  and/or held in place (e.g., securely held in place) in the housing  318 . These features, along with additional details of the busway assembly  300 , are described in co-pending and commonly owned U.S. patent application Ser. No. 15/443,112 entitled “Busway Systems and Related Assemblies and Methods” (Attorney Docket No. 9060-355CTIP), filed Feb. 27, 2017, the disclosure of which is incorporated by reference herein in its entirety. 
     The insulators  352 ,  354  may be formed of any suitable electrically insulating material. According to some embodiments, the insulators  352 ,  354  are formed of a polycarbonate or a thermoplastic polycarbonate. The insulators  352 ,  354  may be formed of Lupoy™ available from LG Chem (e.g., LG LUPOY NF 1005F03R). 
     Referring again to  FIG. 19 , the busway section  312  includes a plurality of conductors or bus bars  410 ,  412 ,  414 ,  416 ,  418 ,  419 . The conductors or bus bars  410 ,  412 ,  414 ,  416 ,  418 ,  419  may be formed of any suitable electrically conductive material; an exemplary suitable material is copper or aluminum. 
       FIG. 25  is a perspective view of the bus bar conductor  410  and  FIG. 26  is an end view of the conductor  410 . The conductors  412 ,  414 ,  416 ,  418  and  419  are the same or substantially the same as the conductor  410 ; therefore, in the interest of brevity, only the conductor  410  will be described in detail below. 
     The conductor  410  has a length L 6 . According to some embodiments, the length L 6  is less than the length L 4  of the housing  318  ( FIG. 20 ) and/or the length L 5  of the insulators  352 ,  354  ( FIG. 22 ). According to some embodiments, the length L 6  of the conductor  410  is about 1 to 2 inches less than the length L 4  of the housing  318  and/or the length L 5  of the insulators  352 ,  354 . According to some embodiments, the length L 6  of the conductor  410  is about 1 to 1.25 inches less than the length L 4  of the housing  318  and/or the length L 5  of the insulators  352 ,  354 . 
     Referring to  FIG. 26 , the conductor  410  may have a “butterfly” profile. More specifically, the conductor  410  includes a straight or substantially straight outer portion  410 _O and opposite upper and lower (or first and second) curved or bent portions  410 U,  410 L. The upper portion  410 U includes a first upper portion  410 U 1  that extends away from the outer portion  410 _O and curves or bends downwardly and a second upper portion  410 U 2  that extends away from the first upper portion  410 U 1  and curves or bends upwardly. A contact surface  410 S is defined between or at an interface of the first and second upper portions  410 U 1 ,  410 U 2  (although it will be understood that the contact surface  410 S may be defined by a portion of the first upper portion  410 U 1  and/or a portion of the second upper portion  410 U 2 ). The second upper portion  410 U 2  terminates at a first inner end  41011  of the conductor  410 . 
     Similarly, the lower portion  410 L includes a first lower portion  410 L 1  that extends away from the outer portion  410 _O and curves or bends upwardly and a second lower portion  410 L 2  that extends away from the first lower portion  410 L 1  and curves or bends downwardly. A contact surface  410 S is defined between or at an interface of the first and second lower portions  410 L 1 ,  410 L 2  (although it will be understood that the contact surface  410 S may be defined by a portion of the first lower portion  410 L 1  and/or a portion of the second lower portion  410 L 2 ). The second lower portion  410 L 2  terminates at a second inner end  41012  of the conductor  410 . 
     The conductor outer portion  410 _O and the upper and lower portions  410 U,  410 L define a lengthwise channel  410   c . The channel  410   c  tapers inwardly from the first and second inner ends  41011 ,  41012  to the contact surface  410 S of the conductor  410 . In other words, the conductor  410  includes a flared opening  410 F to the channel  410   c . This may facilitate alignment and/or guidance for the insertion of a conductor or stab of a plug-in device to be received in the channel  410   c.    
     The conductor  410  includes the double-sided (or dual pressure) contact surface  410 S to provide increased contact surface area and/or compressive force on conductors received in the channel  410   c  of the conductor  410 . As described in more detail herein, such conductors may be associated with stab base assemblies and/or plug-in devices. 
     It will be appreciated that each of the conductors  412 ,  414 ,  416 ,  418 ,  419  shares the same features and advantages described above in reference to the conductor  410 . For example, each of the conductors  412 ,  414 ,  416 ,  418 ,  419  includes a double-sided contact surface  412 S,  414 S,  416 S,  418 S,  419 S, a channel  412   c ,  414   c ,  416   c ,  418   c ,  419   c , and a flared opening  412 F,  414 F,  416 F,  418 F,  419 F as described above. 
     Turning to  FIG. 27 , the conductors or bus bars are received in channels defined in the insulators  352 ,  354 . The conductors  410  and  412  are received in the channels  368  and  378  of the insulator  352 , respectively. The conductor  416  is received in the channel  368  of the insulator  354 . In some embodiments, the conductor  414  is received in the channel  388  of the insulator  352 . In some embodiments, the conductor  418  is received in the channel  378  of the insulator  354 . In some embodiments, the conductor  419  is received in the channel  388  of the insulator  354 . 
     The conductors  410 ,  412  and  416  may be phase conductors or bus bars (e.g., the conductor  410  may be an A phase conductor, the conductor  412  may be a B phase conductor and the conductor  416  may be a C phase conductor), the conductor  414  may be a ground conductor or bus bar, and the conductor  418  may be a neutral conductor or bus bar. Such a configuration can be used for a three phase busway system, although other configurations are contemplated including single phase and two phase busway systems. 
     In some embodiments, the conductor  414 , the conductor  418  and/or the conductor  419  may be omitted. For example, the conductor  414  may be omitted and the housing  318  may provide standard ground. Rails  264  of joint cover assembly  250  ( FIG. 18 ) may serve as ground blocks (e.g., T-shaped ground blocks) to create and maintain a housing ground path. That is, when the joint cover  250  is installed for operation (e.g., when joint cover housing  256  is secured over the joint assembly  316  by, for example, receiving fasteners  262  through apertures  260  and the rails  264  with the rails received in the channels  332  of the busway housings), the ground block or rails  264  may form a housing ground path between adjacent busway sections  312 ,  314 . Where used, the conductor  414  may be a ground conductor or bus bar for a 200% ground rating. 
     Where used, the conductor  418  may be a neutral conductor or bus bar and may provide standard neutral. Where used in combination with the conductor  418 , the conductor  419  may be a neutral conductor or bus bar for a 200% neutral rating. 
     The conductors  410 ,  412 ,  414 ,  416 ,  418 ,  419  may all be the same size and shape. This may reduce manufacturing costs and provide reliability and repeatability of fit within the insulator channels and placement of the contact surface area for a conductor to be coupled thereto. 
     The upper and lower portions of each conductor (e.g., the upper and lower portions  410 U,  410 L of the conductor  410  shown in  FIG. 26 ) may be resilient and able to flex. The raised portions of the insulator projections (e.g., the raised portions  371 ,  373  of the projections  370 ,  372  shown in  FIG. 23 ) may be adjacent and/or abut the upper and lower portions of the conductor (e.g., the upper and lower portions  410 U,  410 L of the conductor  410  shown in  FIG. 26 ) to help ensure that the upper and lower portions are spaced apart the correct distance. 
     The busway section  312  (e.g., the housing  318  and/or the insulators  352 ,  354 ) defines a channel  420  at the lower portion  334  of the housing  318  in which plug-in devices can be received and engage the conductors  410 ,  412 ,  414 ,  416 ,  418 ,  419 . The channel  420  is continuous along the length L 4  of the housing  318  ( FIG. 20 ) such that the busway section  312  can be used with a continuous plug-in busway system. 
     Referring back to  FIG. 19 , the busway section  312  may include first and second finger safe lip seals  422 ,  424 . As illustrated in  FIG. 27 , the seals  422 ,  424  are shaped and configured to be received along the lower flanges  344  of the housing  318 . The seals  422 ,  424  are formed of an electrically insulating material (e.g., a polycarbonate or a thermoplastic polycarbonate material such as LG LUPOY NF 1005F03R) and provide a safety feature to help prevent or reduce the likelihood of contact with the housing  318  and/or the conductors  410 ,  412 ,  414 ,  416 ,  418 ,  419  during installation or maintenance or when installing a plug-in device in the channel  420 . 
     The seals  422 ,  424  may be used so that the busway system complies with safety regulations such as the Underwriters Laboratories (UL) “Finger Safe Probe” standard. In some embodiments, the seals  422 ,  424  may be omitted and the design may include component interface dimensions to comply with the UL “Finger Safe Probe” standard. 
     The stab base assembly  10  and the plug-in device  120  may be electrically connected to the busway as will now be described. Referring to  FIG. 28 , the stab base assembly  10  is positioned below the opening  420  of the housing  318  of the busway section  312 . Referring to  FIGS. 28 and 29 , the stab base assembly  10  is moved or urged upwardly through the opening  420  to a first position in the busway section  312  or busway housing  318 . In the first position, the first and second stab conductors  22 ,  24  ( FIG. 1 ) and the stab conductor  32  ( FIG. 2 ) each extend away from the stab base housing  12  in a direction that is parallel or substantially parallel to the longitudinal axis A 1  of the busway housing  318  ( FIG. 20 ). Where used, the stab conductors  26 ,  34 , and/or  36  also extend away from the stab base housing  12  in a direction that is parallel or substantially parallel to the longitudinal axis A 1  of the busway housing  318  in the first position. 
     Also in the first position, the ground stab conductor  72  contacts the upper wall  321  of the busway housing  318 . This helps ensure that the stab base assembly  10  and the plug-in device  120  are grounded before being electrically connected to the busway. 
     The stab base assembly  10  is then rotated to a second position illustrated in  FIG. 30 . The stab base assembly  10  and the plug-in device  120  are electrically connected to the busway in the second position. More specifically, the stab conductor  22  is electrically connected with the bus bar conductor  410 , the stab conductor  24  is electrically connected with the bus bar conductor  412  and the stab conductor  32  is electrically connected with the bus bar conductor  418  in the second position. In addition, where used, the stab conductor  26  is electrically connected with the bus bar conductor  414 , the stab conductor  34  is electrically connected with the bus bar conductor  418 , and/or the stab conductor  36  is electrically connected with the bus bar conductor  419  in the second position. Referring to  FIG. 27 , the configuration of the insulators  352 ,  354  with the projections and the shape of the conductors  410 ,  412 ,  414 ,  416 ,  418 ,  419  may facilitate guiding the stabs into contact with the bus bar conductors. 
     More specifically, referring to  FIGS. 27 and 30 , the stab conductors  22 ,  24 ,  26 ,  32 ,  34  and/or  36  may be slidingly received in the channels  410   c ,  412   c ,  414   c ,  416   c ,  418   c  and/or  419   c , respectively, of the busway section conductors  410 ,  412 ,  414 ,  416 ,  417 ,  418  and/or  419  when the stab base assembly  10  is rotated from the first to the second position. The tapered portions  22   t ,  24   t ,  26   t ,  32   t ,  34   t  and  36   t  at one end of the stab conductors  22 ,  24 ,  26 ,  32 ,  34  and  36  may help facilitate insertion into the busway section conductor channels  410   c ,  412   c ,  414   c ,  416   c ,  418   c  and  419   c  when the stab base assembly  10  is rotated from the first position to the second position. Each stab conductor is slidingly received between the upper and lower portions of the corresponding busway section conductor and makes contact with the contact surface defined thereby. For example, the stab conductor  24  is received in the channel  412   c  defined by the busway section conductor  412 . The stab conductor  24  is received between the upper and lower portions  412 U,  412 L of the conductor  412  and contacts the contact surface  412 S defined by the upper and lower portions  412 U,  412 L of the conductor  412 . 
     The ground stab conductor  70  continues to contact the upper wall  321  of the busway housing  318  when the stab base assembly  10  is rotated from the first position to the second position. As described above, the ground conductor  72  may be resilient and configured to translate up and down as needed during rotation to maintain contact with the upper wall  321  of the busway housing  318 . 
     The configuration of the alignment tabs  64 ,  66  of the stab base housing  12  and/or the channels  336 ,  338  of the busway housing  318  help ensure electrical polarity between the proper phasing when the stab base assembly  10  is rotated from the first position to the second position. More specifically, the relatively longer second alignment tab  66  can be received in the relatively deeper channel  338  when the stab base assembly  10  is rotated from the first position to the second position. However, the second alignment tab  66  is too long to be received in the shallower channel  336 . 
     Put another way, the stab base assembly  10  can only be rotated in one rotational direction from the first position shown in  FIG. 29  to reach the second position shown in  FIG. 30 . As illustrated, the stab base assembly can only be rotated in the counterclockwise direction to reach the second position such that the stab conductors are electrically connected with the bus bar conductors of the busway. This prevents an electrical connection with incorrect polarity. Referring again to  FIGS. 1 and 2 , the stab base housing  12  includes a first rounded portion  80  above the first alignment tab  64  and a second rounded portion  82  above the second alignment tab  66 . The first and second rounded portions  80 ,  82  may be concave portions. The first and second rounded portions  80 ,  82  facilitate sliding of the first and second alignment tabs  64 ,  66  in the first and second busway housing channels  336 ,  338 , respectively, when the stab base assembly  10  is rotated from the first position to the second position. The rounded portions  80 ,  82  may help prevent the stab base housing  12  from binding in the busway housing  318  during rotation. 
     The alignment feature of the stab base housing may take other forms. As just one example, the stab base housing  12  may include channels, recesses or slots defined therein and the busway housing  318  may include tabs configured to be received in the channels of the stab base housing  12 . The tabs and the channels may be sized to allow rotation in only one rotational direction. 
     The foregoing is illustrative of the present invention and is not to be construed as limiting thereof. Although a few exemplary embodiments of this invention have been described, those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments without materially departing from the teachings and advantages of this invention. Accordingly, all such modifications are intended to be included within the scope of this invention as defined in the claims. The invention is defined by the following claims, with equivalents of the claims to be included therein.