reglab/statecodes huggingface dataset:
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › PROTECTIVE ARRANGEMENTS › Section 39.201 - Storage batteries, transformers, and lightning arresters

Current through Register Vol. 54, No. 28, July 13, 2024
(a) The
					 installation of nonportable storage batteries above 50 kilowatt-hour capacity,
					 at the 8 hour rate of discharge, shall be in accordance with the requirements
					 given in §§
											39.121-39.127. If small storage
					 batteries, not included under §§
											39.121-39.127, are placed in rooms used
					 also for other purposes, adequate guards or enclosures shall be provided, when
					 necessary, to prevent the approach of unauthorized persons, and special means
					 of ventilation when necessary to prevent the accumulation of inflammable gas.
					 For batteries whose operating voltage exceeds 150, construction shall comply
					 with §§
											39.125 and
					 39.199(b)
					 (relating to guarding live parts in battery room; and guarding or isolating
					 live parts).
(b) The installation
					 of transformers having either winding over 300 volts to ground shall comply
					 with the provisions of §§
											39.131-39.134 and if the operating
					 voltage of any winding exceeds 750, the transformers shall be made inaccessible
					 to unauthorized persons. Reference should also be made to § 39.197(c)
					 (relating to grounding).
(c) The
					 installation of lightning arresters shall comply with §§
											39.181-39.186 and if the operating
					 voltage of the circuit exceeds 750 volts, the arresters shall be made
					 inaccessible to unauthorized persons.
This section cited in 34 Pa. Code §
													39.134 (relating to transformers);
						  34 Pa. Code §
													39.191 (relating to
						  applicability); 34 Pa. Code §
													39.192 (relating to scope); and 34
						  Pa. Code §
													39.193 (relating to modification
						  or waiver of provisions).
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › PROTECTIVE ARRANGEMENTS › Section 39.202 - Identification

Current through Register Vol. 54, No. 28, July 13, 2024
(a) Electrical
					 utilization equipment shall be suitably identified, when necessary for
					 safety.
(b) The identification may
					 be by position, color, number, nameplate, label, design or other
					 means.
(c) The voltage and intended
					 use shall be shown where important.
This section cited in 34 Pa. Code §
													39.191 (relating to
						  applicability); 34 Pa. Code §
													39.192 (relating to scope); and 34
						  Pa. Code §
													39.193 (relating to modification
						  or waiver of provisions).
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › CONDUCTORS › Section 39.211 - Electrical protection

Current through Register Vol. 54, No. 28, July 13, 2024
(a)
					 Conductors shall be suitable for the location, use, and voltage, and each
					 conductor, except neutral conductors, ground wires, and conductors of circuits
					 the opening of which may cause special hazard by the interruption of service or
					 removal of protection, shall be protected against excessive current by a
					 suitable automatic cut-out or by the design of the system.
(b) Neutral conductors in three wire systems
					 shall be arranged without automatic cut-outs interrupting their continuity,
					 unless the cut-out opens conductors of the circuit with one operation. Switches
					 in three wire circuits shall open conductors of the circuit with one operation,
					 except that the switch may be omitted from the neutral. The neutrals shall
					 everywhere be of sufficient size to safely carry the maximum current in either
					 outer conductor at that point. In two wire branches from three wire circuits
					 the conductor connected to the neutral is not for the purpose of this
					 subsection considered a neutral conductor.
(c) Conductors normally grounded for the
					 protection of persons shall be arranged without automatic cut-outs interrupting
					 their continuity between the source of electrical supply and the point at which
					 the ground wire is attached, unless the cut-out opens all conductors of the
					 circuit with one operation. Switches shall open all conductors of the circuit
					 with one operation, except that the switch need not be placed only on
					 ungrounded conductors of the circuit, except that this does not necessarily
					 apply to single pole key sockets which may be used in which the switch may be
					 placed on the grounded side. When the utilization equipment is connected to
					 electrical supply lines, the point of connection to the service leads is
					 considered as the source of electrical supply. The identification of neutral
					 and grounded conductors by some suitable marking will facilitate compliance
					 with this subsection.
This section cited in 34 Pa. Code §
													39.233 (relating to where switches
						  are required).
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › CONDUCTORS › Section 39.212 - Mechanical and thermal protection

Current through Register Vol. 54, No. 28, July 13, 2024
(a)
					 If exposed to mechanical injury, suitable casing, armor, or other means shall
					 be employed to prevent injury or disturbances to conductors, their insulation,
					 or supports. Conductors used as meter loops shall be substantially supported
					 clear of objects other than their insulating supports, and separated from each
					 other, or shall be in approved conduit or substantial noncombustible,
					 nonabsorptive casings.
(b) If
					 conductors with combustible insulating coverings are closely grouped, as
					 sometimes on the rear of switchboards or in cableways, they shall have a
					 substantial noncombustible outer covering. Conductors in very hot locations
					 shall have a noncombustible insulating covering.
(c) Bare conductors shall be used only for
					 switchboard, panelboard, or storage battery connections; or for electrolytic,
					 low voltage furnace, or low voltage welding circuit, and similar connections;
					 or for trolley wires, third rails, and other contact conductor, and parts at
					 different potentials. Such bare conductors shall be fixed at adequate
					 separations by the use of suitable supports. Except at the point where a
					 permanent ground connection is made such conductors within buildings shall be
					 kept insulated from the ground. Bare conductors shall not be used where
					 inflammable gases or explosives are liable to exist in large quantities.
					 Reference should also be made to §§
											39.199 and
					 39.213 (relating to guarding or
					 isolating live parts; isolating or guarding).
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › CONDUCTORS › Section 39.213 - Isolating or guarding

Current through Register Vol. 54, No. 28, July 13, 2024
Fixed conductors having insulating coverings and
						operating at over 300 volts to ground, and bare conductors at all voltages
						shall, unless guarded as required in §
											39.214 (relating to guarding
						conductors) be so isolated by elevation, as required by §
											39.199(a) 
						(relating to guarding or isolating live parts), that no person may
						inadvertently come or bring conducting objects in contact with
						them.
This section cited in 34 Pa. Code §
													39.212 (relating to mechanical and
						  thermal protection).
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › CONDUCTORS › Section 39.214 - Guarding conductors

Current through Register Vol. 54, No. 28, July 13, 2024
(a)
Use of enclosing casings.
For enclosing insulated conductors,
					 approved permanently grounded metal conduit, waterproof insulating conduit, or
					 grounded metal conduit, waterproof insulating conduit, or grounded metal
					 sheathing shall be used, except that in dry places, ducts, runways, or
					 compartments of suitable fire-resistive material, may be used for conductors,
					 below 750 volts, if containing no exposed combustible material. Reference
					 should also be made to §
											39.219 (relating to grounding or
					 isolating service conduits). In damp places conduit shall be made waterproof
					 and provided with suitable means for draining off condensation, unless the
					 conductors contained are lead sheathed cable.
(b)
Open conductors below 750
					 volts.
If open insulated conductors between 300 volts to ground and
					 750 volts, or open bare ungrounded conductors at any voltage below 750 volts
					 (except bare wires used at high temperatures in heating devices, at voltages
					 not exceeding 300 volts to ground) are necessarily brought closer to the floor
					 line than 8 feet, they shall be guarded by permanent screens or
					 enclosures.
(c)
Other
					 requirements.
If persons at any time remove or pass by screens or
					 other guards for bare conductors while such conductors are alive, such screens
					 or guards shall be of insulating material, and all conducting floors, walls,
					 machine frames and similar surfaces within 8 feet below the conductors or 3
					 feet horizontally from them, shall be covered with suitable insulating
					 platforms, mats or covers. Reference should also be made to §
											39.199(b) 
					 (relating to guarding or isolating live parts). Dependence should not be placed
					 on the unprotected insulating covering as a suitable guard or enclosure for
					 such conductors near the floor line, nor in certain other cases. Reference
					 should also be made to §
											39.199(a). Other
					 guards should be provided to protect the insulation against mechanical injury
					 and to secure the safety of persons who necessarily come near the
					 conductors.
This section cited in 34 Pa. Code §
													39.199 (relating to guarding or
						  isolating live parts); and 34 Pa. Code §
													39.274 (relating to accessibility
						  and guarding of signs).
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › CONDUCTORS › Section 39.215 - Guarding in damp or hazardous locations

Current through Register Vol. 54, No. 28, July 13, 2024
(a) Conductors in damp locations or where
					 exposed to corrosion, if not in waterproofed conduit, or in waterproof metal
					 sheaths in other suitable ducts, shall be effectively isolated and supported on
					 insulators of a suitable type.
(b)
					 Conductors in locations where inflammable gas or flyings normally exist shall
					 be in grounded metal conduit or metal sheathed cable. Fittings and outlets of
					 such conduit and cable shall be electrically and mechanically continuous with
					 the conduit or metal sheath, and the conduit shall be sealed by the use of
					 suitable potheads or equivalent devices to prevent entrance of gases.
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › CONDUCTORS › Section 39.216 - Precautions to avoid excessive inductance and eddy currents

Current through Register Vol. 54, No. 28, July 13, 2024
Supply conductors of alternating-current or
						direct-current circuits should not be run in separate iron conduits or on
						opposite sides of I beams or other iron structures or be otherwise run so as to
						increase abnormally the self-inductance of the circuit. Such construction, by
						introducing large self inductance in direct-current circuits, causes fuses to
						blow explosively; in alternating-current circuits it causes heating due to eddy
						currents in the metal.
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › CONDUCTORS › Section 39.217 - Pendants and portables

Current through Register Vol. 54, No. 28, July 13, 2024
Pendants or portable conductors shall not be installed or
						used on circuits operating at over 300 volts to ground, unless they are
						accessible only to persons authorized to approach them. In such cases they
						shall be of a type suitable for the voltage and conditions, and conform to the
						provisions of §§
											39.281-39.285.
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › CONDUCTORS › Section 39.218 - Taping ends and joints

Current through Register Vol. 54, No. 28, July 13, 2024
Ends and joints of insulated conductors, unless otherwise
						adequately guarded, shall have equal insulating covering with other portions of
						the conductor, and this covering shall be securely held in
						place.
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › CONDUCTORS › Section 39.219 - Grounding or isolating service conduits

Current through Register Vol. 54, No. 28, July 13, 2024
(a) Metal conduit or sheathing encasing
					 service conductors from either overhead or underground lines shall either be
					 permanently grounded as required by §
											39.197 (relating to grounding) or
					 effectively isolated by elevation. Reference should also be made to
					 §§
											39.197 and
					 39.199 (relating to grounding; and
					 guarding or isolating live parts).
(b) If not grounded, the service conduit or
					 sheathing shall be effectively insulated from metal work of the building, and
					 from its piping. If service conduit or sheathing is electrically continuous
					 with interior conduit or sheathing, the grounding required for conduit in
					 §
											39.197(c) shall
					 be made direct to the service conduit or sheathing and shall have conductance
					 not less than that of No. 6 copper wire.
(c) If grounded service conduit or sheathing
					 is insulated from interior conduit or sheathing, its ground wire conductance
					 need not exceed that required under §§
											39.61-39.70. It is frequently advisable
					 to insulate interior conduit or sheathing from underground service conduit or
					 sheathing, to prevent burnouts of small interior conduit, armored cable sheaths
					 or metal molding, by large currents which might flow from grounded circuits
					 through the interior metal to water pipes or other good ground connections
					 within the building.
This section cited in 34 Pa. Code §
													39.214 (relating to guarding
						  conductors).
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › CONDUCTORS › Section 39.220 - Temporary wiring

Current through Register Vol. 54, No. 28, July 13, 2024
Temporary wiring and equipment, which is not in
						compliance with this chapter, may be used, but only when under competent
						supervision, or protected by suitable barriers or warning signs while it or
						neighboring wiring is alive and accessible to any person.
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › FUSES AND OTHER CUT-OUTS, SWITCHES AND CONTROLLERS › Section 39.231 - Accessible and indicating

Current through Register Vol. 54, No. 28, July 13, 2024
Switches, automatic cut-outs, controllers, starting
						rheostats, auto starters and other control devices shall be readily and safely
						accessible to authorized persons; they shall be so located or marked when
						controlling circuits of over 1,320 watts, as sufficiently to indicate their
						function and the location and character of the equipment controlled by them and
						whether they are open or closed. They shall be so installed as to minimize the
						danger of accidental operation. If practicable, they shall be so installed that
						gravity can not close them; and such switches as close by gravity shall be
						provided with a proper stop block or latch to prevent accidental closing.
						Switches controlling emergency lighting circuits, elevator circuits, circuits
						in theaters, hospital operating rooms, and other circuits, the interruption of
						which may cause special hazard, shall be arranged so as to be accessible only
						to authorized persons.
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › FUSES AND OTHER CUT-OUTS, SWITCHES AND CONTROLLERS › Section 39.232 - Hazardous locations

Current through Register Vol. 54, No. 28, July 13, 2024
When necessary to install fuses or other automatic
						cut-outs, or switches or other control devices in locations where explosives,
						inflammable gas or inflammable flyings exist, they shall be suitably protected.
						Reference should also be made to §
											39.200 (relating to hazardous
						locations).
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › FUSES AND OTHER CUT-OUTS, SWITCHES AND CONTROLLERS › Section 39.233 - Where switches are required

Current through Register Vol. 54, No. 28, July 13, 2024
(a)
					 Suitable switches shall be inserted in all feeder conductors connecting
					 utilization installations to service connections from either overhead or
					 underground lines. These switches shall be readily accessible, and as close as
					 practicable to the point of connection with overhead or underground
					 lines.
(b) Suitable switches shall
					 be inserted in all circuit leads, except a grounded conductor to motors,
					 transformers, storage batteries, electric furnaces, and similar utilization
					 equipment, except between parts or pieces of apparatus intended to operate as a
					 unit. Switches installed for use on lighting and similar circuits under 1,320
					 watts are not required to interrupt all conductors of the circuit. Reference
					 should also be made to §
											39.211 (relating to electrical
					 protection).
(c) Switches or plug
					 connectors shall be placed in circuit leads at the point where temporary wiring
					 or portable conductors are connected to the permanent wiring.
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › FUSES AND OTHER CUT-OUTS, SWITCHES AND CONTROLLERS › Section 39.234 - Character of switches and disconnectors

Current through Register Vol. 54, No. 28, July 13, 2024
(a)
Capacity.
Switches used
					 otherwise than as disconnectors shall have a rated capacity sufficient to
					 insure safe interruption, at the working voltage, of the greatest current which
					 they may be required to carry continuously, and shall be marked with the
					 current which they can safely interrupt. Rating means that they should operate
					 successfully at 50% overload in amperes and at the working voltage under the
					 most severe conditions which they are liable to meet in practice.
(b)
Disconnectors.
Disconnectors shall be of suitable voltage and ampere rating for the circuit in
					 which they are installed and shall be accessible only to properly qualified
					 persons. They shall also be protected by signs warning against opening the
					 switches while carrying current in excess of the safe opening limit.
					 Interlocking arrangements should be used to prevent opening of such
					 disconnectors under loads beyond their safe opening capacity.
(c)
Locking or blocking.
Means shall be provided so that switches controlling motors, storage batteries,
					 transformers, electric furnaces, and similar utilization equipment may be
					 locked or blocked in the open position and plainly tagged to prevent careless
					 closing while work is being done on the equipment controlled by them, unless
					 live and moving parts of controlled equipment which would cause a hazard are so
					 guarded as to render locking or blocking unnecessary. Small capacity snap
					 switches, if near machines and in plain sight from parts of the machines
					 controlled, are exempted. Switches of any size are exempted if the installation
					 comprises only one motor, and the switch is in plain sight from parts of the
					 machines operated by the motor. Locking should be utilized instead of blocking,
					 wherever parts of the machinery driven are remote from the point of
					 control.
(d)
Good contact.
Switches, controllers, and rheostats shall be so constructed as to
					 make and maintain good contact. Knife switches shall maintain such alignment
					 under service conditions that they may be closed with a single unhesitating
					 motion.
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › FUSES AND OTHER CUT-OUTS, SWITCHES AND CONTROLLERS › Section 39.235 - Disconnection of fusible cut-outs before handling

Current through Register Vol. 54, No. 28, July 13, 2024
(a) Fusible cut-outs in circuits operating at
					 over 150 volts to ground, shall, if practicable, where accessible to others
					 than qualified electrical attendants, be so arranged that the ungrounded
					 current-carrying parts cannot be touched by persons refusing the cut-out until
					 the fuses have been disconnected from all sources of electrical energy. If the
					 circuit voltage exceeds 300 to ground, this arrangement shall always be made.
					 If practicable this protection should also be provided for fusible cut-outs in
					 curcuits operating below 150 volts to ground. This may be accomplished by a
					 construction in which the fuse and its exposed current-carrying connections are
					 accessible only after they have been disconnected from the circuit, either by
					 opening the fuse enclosure or by other means.
(b) On circuits not exceeding 150 volts to
					 ground, if the fusible cut-outs are not arranged so that they are necessarily
					 disconnected from all sources of electrical energy before the ungrounded
					 current-carrying parts can be touched, it is recommended that switches be so
					 placed or arranged that opening them will disconnect the fuses from all sources
					 of electrical energy. On circuits between 150 and 300 volts to ground, if
					 fusible cut-outs are not arranged so that they are necessarily disconnected
					 from sources of electrical energy before the ungrounded current-carrying parts
					 can be touched, switches shall always be so placed or arranged that opening
					 them will disconnect the fuses from sources of electrical energy unless
					 portable insulating appliances are provided for handling the
					 cut-outs.
(c) If fusible cut-outs
					 are in locked cabinets or otherwise made inaccessible to all but qualified
					 persons, sufficient protection is usually secured, even for voltages above 300,
					 by the use of switches accessible only to such persons, these switches to be
					 placed or arranged so that their operation will disconnect the fuses from all
					 sources of electrical energy.
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › FUSES AND OTHER CUT-OUTS, SWITCHES AND CONTROLLERS › Section 39.236 - Arcing or suddenly moving parts

Current through Register Vol. 54, No. 28, July 13, 2024
(a) Fuses and circuit breakers shall, as far
					 as possible, be so located and shielded that persons will not be burned by
					 their operation.
(b) Handles or
					 levers of circuit breakers and similar parts which may move suddenly in such
					 way that persons in the vicinity are liable to be injured by being struck by
					 them shall be guarded or isolated, if practicable.
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › FUSES AND OTHER CUT-OUTS, SWITCHES AND CONTROLLERS › Section 39.237 - Grounding noncurrent-carrying metal parts

Current through Register Vol. 54, No. 28, July 13, 2024
Exposed noncurrent-carrying metal parts of switch and
						fuse cases, levers, and other similar parts to which leakage may occur from
						live parts shall be permanently grounded according to the provisions of §
											39.197 (relating to grounding).
						Parts of machines, such as name plates, screws in wood, and similar small parts
						which are not liable to become alive except under very unusual circumstances
						are not considered as coming under this requirement and may be left
						ungrounded.
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › FUSES AND OTHER CUT-OUTS, SWITCHES AND CONTROLLERS › Section 39.238 - Guarding live parts of switches and automatic cut-outs

Current through Register Vol. 54, No. 28, July 13, 2024
(a) Manual switches, except those under 150
					 volts to ground and limited to 60 amperes by cut-outs in series, shall have
					 suitable casings or guards protecting the operator from danger of contact with
					 current-carrying parts, or shall be provided with insulating handles and
					 suitable insulating guard disks or shields so arranged between the handles and
					 the live parts as to prevent the hand from slipping into contact with live
					 parts or being burned by arcing at the switches.
(b) Current-carrying parts of switches or
					 automatic cut-outs operating at over 150 volts to ground shall be provided with
					 enclosing guards, effective during ordinary operation, if accessible to other
					 than properly qualified persons. Those having current-carrying parts exposed
					 may be made inaccessible to other than properly qualified persons by enclosure
					 in locked cabinets or rooms.
(c) If
					 switches or cut-outs above 150 volts to ground are not guarded during
					 operation, suitable insulating floors, mats or platforms shall be provided on
					 which the operator shall stand while operating the switches or adjusting
					 automatic cut-outs, and, unless operators invariably wear suitable insulating
					 gloves while handling the switches, any conducting walls or machine frames
					 within three feet shall be provided with suitable insulating guards. The
					 suitable guarding of live parts will obviate the necessity for such insulating
					 floors and other devices, and if use of such devices is impracticable from the
					 nature of the location or mechanical process carried on, guards should always
					 be used.
(d) Switches shall, if
					 practicable, be so connected as to have no live blades exposed to contact when
					 a switch is open.
This section cited in 34 Pa. Code §
													39.246 (relating to guarding
						  current-carrying parts).
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › SWITCHBOARDS AND PANEL BOARDS › Section 39.241 - Accessibility and convenient attendance

Current through Register Vol. 54, No. 28, July 13, 2024
(a) Switchboards and panelboards shall have
					 switches so arranged that the means of control are readily accessible to the
					 operator.
(b) Instruments, relays
					 or other devices requiring reading or adjustment shall be so placed that work
					 may be readily performed from the working space provided. Reference should also
					 be made to §
											39.246 (relating to guarding
					 current-carrying parts).
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › SWITCHBOARDS AND PANEL BOARDS › Section 39.242 - Location

Current through Register Vol. 54, No. 28, July 13, 2024
Switchboards shall, if practicable, be so placed that the
						persons necessarily near the board are not endangered by machinery or equipment
						located near the board. Means for adequate illumination shall be
						provided.
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › SWITCHBOARDS AND PANEL BOARDS › Section 39.243 - Arrangement and identification

Current through Register Vol. 54, No. 28, July 13, 2024
(a)
					 Connections, wiring and equipment of switchboards and panelboards shall be
					 arranged in an orderly manner and switches and cut-outs shall be plainly
					 marked, labeled or arranged so as to afford ready means for identifying
					 circuits or equipment supplied through them.
(b) A diagram of switchboard or panelboard
					 connections and devices should be kept posted in some convenient place near
					 such equipment.
(c) Switchboards
					 shall have current-carrying parts which are ordinarily isolated or guarded, but
					 which may occasionally require adjustment or repair while alive, so arranged
					 that suitable portable covers or shields may be effectively placed to protect
					 workmen from contact with any neighboring live parts.
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › SWITCHBOARDS AND PANEL BOARDS › Section 39.244 - Spacing and barriers against short circuit

Current through Register Vol. 54, No. 28, July 13, 2024
(a) Exposed bare parts of different potential
					 on any switchboard or panel shall be as few as practicable and these parts
					 shall be effectively separated.
(b)
					 Such parts, including bus bars, should, when practicable, be so located or
					 provided with such barriers or substantial insulating coverings that parts of
					 different potential are not accidentally short circuited by tools or other
					 conducting objects.
This section cited in 34 Pa. Code §
													39.246 (relating to guarding
						  current-carrying parts).
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › SWITCHBOARDS AND PANEL BOARDS › Section 39.245 - Grounding frames

Current through Register Vol. 54, No. 28, July 13, 2024
Switchboard frames and metal cabinets should be
						permanently grounded, under the conditions and with the exceptions noted in
						§
											39.197 (relating to
						grounding).
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › SWITCHBOARDS AND PANEL BOARDS › Section 39.246 - Guarding current-carrying parts

Current through Register Vol. 54, No. 28, July 13, 2024
(a) Switchboards and panelboards having
					 exposed current-carrying parts operating at over 150 volts to ground and not
					 isolated by elevation at least eight feet above the floor shall when
					 practicable be suitably enclosed in locked cabinets, screens, or rooms, or
					 other enclosures to make them inaccessible to others than the authorized
					 operator. Conducting floors about such boards shall be provided with a suitable
					 insulating platform or mat so placed that no person may inadvertently touch
					 live parts unless standing on the insulating platform or mat. Reference should
					 also be made to §§
											39.199 and
					 39.238(a) 
					 (relating to guarding or isolating live parts; guarding live parts of switches
					 and automatic cut-outs). If the circuit voltage exceeds 300 to ground this
					 arrangement shall always be made.
(b) If switchboards or panelboards at voltage
					 below 150 to ground are accessible to other than properly qualified operators,
					 they should, if practicable, be enclosed in cabinets or screens as an effective
					 precaution against accidental short circuits at times when no operation of the
					 board necessitates the opening of the cabinet or screen. Reference should also
					 be made to §
											39.244 (relating to spacing and
					 barriers against short circuit).
(c) Plug-type switchboards on
					 constant-current systems, or if above 150 volts to ground, shall have no
					 current-carrying parts exposed on face of boards, and plug connectors shall
					 have current-carrying parts guarded as long as they are alive.
(d) Switchboards having no current-carrying
					 parts exposed to at the face, that is, the working space, should be used in
					 theaters and similar places where rapid handling is necessary, and the
					 attention shall be given to signals or to other processes.
(e) Theater switchboards at any voltage, if
					 having current-carrying parts exposed at the face, should, if practicable, be
					 elevated, or guarded by suitable railings, to prevent contact with live parts
					 by passersby.
This section cited in 34 Pa. Code §
													39.241 (relating to accessibility
						  and convenient attendance).
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › MOTORS AND MOTOR DRIVEN MACHINERY › Section 39.251 - Control devices

Current through Register Vol. 54, No. 28, July 13, 2024
(a) Separately
					 excited direct-current motors, also series motors, and motor generators and
					 converters larger than ten kilowatts where it is possible for them to be driven
					 at excessive speed from the direct-current end, as by a reversal of current or
					 decrease in load, shall be provided with speed-limiting devices, unless the
					 load and the mechanical connection to such load are of such a character as to
					 safely limit the speed.
(b) If the
					 speed control of direct-current motors is accomplished by varying the field
					 resistance, and the nature of the load and the range of the field rheostat are
					 such as to make a dangerous speed attainable, and no speed limit devices are
					 used, the field rheostats shall be arranged with novoltage releases or other
					 devices so that the motor may not be started or continued in operation under
					 dangerously weakened field, unless the operation of such a novoltage release
					 might result in serious injury to service or apparatus. Motors which are
					 designed to permit starting safely under weakened field shall not be included
					 in the provisions of this subsection.
(c) Manually controlled starters for motors
					 shall be so designed and circuits so arranged that they return automatically to
					 the off or starting position upon failure of the energy supply, unless the
					 motors and their starting devices are, during operation, under supervision of
					 qualified persons and equivalent protection is otherwise provided.
(d) If speed limiting devices or remote
					 control switches are electrically operated, the control circuits by which such
					 devices are actuated shall be adequately guarded by conduit or otherwise,
					 against mechanical injury.
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › MOTORS AND MOTOR DRIVEN MACHINERY › Section 39.252 - Hazardous locations

Current through Register Vol. 54, No. 28, July 13, 2024
Motors in which sparking or arcing may occur during
						operation, shall, if practicable be kept out of locations where explosives or
						inflammable gas or inflammable flyings exist. If necessarily in such locations,
						they shall be suitably protected. Reference should also be made to §
											39.200 (relating to hazardous
						locations).
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › MOTORS AND MOTOR DRIVEN MACHINERY › Section 39.253 - Deteriorating agencies

Current through Register Vol. 54, No. 28, July 13, 2024
(a)
					 Suitable guards or enclosures shall be provided to protect exposed
					 current-carrying parts of motors and the insulation of motor leads when
					 installed directly under equipment or in other locations where dripping oil,
					 excessive moisture, steam, vapors, chemicals, or similar injurious agents
					 exist.
(b) The metal frames and
					 other exposed noncurrent-carrying metal parts of equipment in these locations
					 shall be permanently grounded. Reference should also be made to §
											39.197(c) 
					 (relating to grounding).
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › MOTORS AND MOTOR DRIVEN MACHINERY › Section 39.254 - Guards for live parts

Current through Register Vol. 54, No. 28, July 13, 2024
(a) Motors
					 operating at over 150 volts to ground, unless isolated by elevation at least 8
					 feet above the floor line, should, if practicable, be provided with permanent
					 inclosures or other suitable guards so arranged as to prevent persons or
					 conducting objects from inadvertently coming or being brought into contact with
					 live parts or interfering with the operation of the motors.
(b) Suitable insulating mats or platforms of
					 substantial construction and providing good footing shall be so placed on
					 floors and, if necessary, on frames of machines having exposed live parts above
					 150 volts to ground that the operators or other persons in the vicinity cannot
					 readily touch such parts unless standing on the mats, platforms, or insulating
					 floors. The suitable guarding of live parts by inclosures of barriers effective
					 during attendance or necessary adjustments of live parts will obviate the
					 necessity for insulating mats, and, if such mats are impracticable from the
					 nature of the location or process carried on, guards shall be used. If
					 connectors are used in motor leads, these should be provided with insulating
					 covering equal to that on the conductors.
(c) If necessary, steps and handrails shall
					 be installed on or about large machines to afford safe access to live parts
					 which shall be examined or adjusted during operation.
(d) If two or more machines, either of which
					 operates at over 150 volts to ground, are mechanically coupled together, and
					 the operator can touch the frames of more than one at a time, the frames of all
					 such machines shall be permanently grounded, unless they are bonded together
					 electrically and surrounded by insulating mats or platforms on which it is
					 necessary persons stand in order to touch the machine frames. If operating at
					 above 300 volts to ground, their frames shall always be grounded, and frames
					 shall also be grounded wherever, from the nature of the location or of
					 processes carried on, the use or maintenance of insulating mats or platforms is
					 impracticable. Reference should also be made to §
											39.197(c)
					 (relating to grounding).
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › MOTORS AND MOTOR DRIVEN MACHINERY › Section 39.255 - Protecting moving parts

Current through Register Vol. 54, No. 28, July 13, 2024
Suitable guards or enclosures shall be arranged at each
						motor or motor driven machine when necessary to prevent persons or objects from
						inadvertently coming in harmful contact with moving parts, including chains,
						belts, gears and pulleys.
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › ELECTRIC FURNACES AND WELDING › Section 39.261 - Protection from burns

Current through Register Vol. 54, No. 28, July 13, 2024
(a) Electric
					 furnaces and apparatus used for arc welding where intensely glowing,
					 incandescent, or arcing parts are exposed, shall be enclosed, so that those
					 parts are not accessible or visible to unauthorized persons.
(b) Suitable protecting screens, hoods,
					 goggles, gloves and other devices shall be provided for the authorized
					 operators who necessarily work or come near such exposed parts.
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › ELECTRIC FURNACES AND WELDING › Section 39.262 - Grounding

Current through Register Vol. 54, No. 28, July 13, 2024
The outside noncurrent-carrying metallic frames of
						furnaces shall be permanently grounded if they contain current-carrying parts
						connected to circuits above 150 volts to ground, or if the circuit within is
						not grounded and is exposed through transformer windings to a circuit over 150
						volts to ground.
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › ELECTRIC FURNACES AND WELDING › Section 39.263 - Guarding live parts

Current through Register Vol. 54, No. 28, July 13, 2024
Except at points where necessarily left exposed, as at
						spot welder contacts, current-carrying parts of furnaces, welders, and control
						equipment shall be suitably guarded with enclosures or barrier
						guards.
This section cited in 34 Pa. Code §
													39.197 (relating to grounding); 34
						  Pa. Code §
													39.272 (relating to insulation);
						  and 34 Pa. Code §
													39.281 (relating to
						  insulation).
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › LIGHTING FIXTURES AND SIGNS › Section 39.271 - Grounding

Current through Register Vol. 54, No. 28, July 13, 2024
(a) Unless
					 otherwise provided by §
											39.197(d)
					 (relating to grounding), exposed noncurrent-carrying metal parts of lighting
					 fixtures and other similar fixed electrical devices shall be permanently
					 grounded when used under the following circumstances:
(1) When in locations where explosives,
					 inflammable gas, or inflammable flyings normally exist in dangerous
					 quantities.
(2) When within
					 touching distance or about 8 feet from metal, concrete, or permanently damp
					 floors or stairways, including fire escapes, galleries, or bridges, as in
					 machine shops, stables, launderies, and the like.
(3) When readily accessible from the ground
					 or floor and also within five feet of conducting surfaces, such as metal
					 piping, metal radiators, stoves, furnaces, plumbing fixtures, damp walls or
					 similar conducting surfaces, as in kitchens, machine shops, print shops, and
					 the like.
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › LIGHTING FIXTURES AND SIGNS › Section 39.272 - Insulation

Current through Register Vol. 54, No. 28, July 13, 2024
(a) Electric
					 fixtures shall be provided with an adequate and mechanically protected
					 dielectric, complying with the standardization rules of the American Institute
					 of Electrical Engineers (A.I.E.E.), interposed between ungrounded
					 current-carrying parts and those external surfaces which persons can
					 touch.
(b) Those current-carrying
					 parts of grills, heaters, and other heating devices, which operate at high
					 temperatures and are necessarily exposed, are exempted. Reference should be
					 made to §
											39.263 (relating to guarding live
					 parts).
This section cited in 34 Pa. Code §
													39.273 (relating to exposed live
						  parts); and 34 Pa. Code §
													39.281 (relating to
						  insulation).
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › LIGHTING FIXTURES AND SIGNS › Section 39.273 - Exposed live parts

Current through Register Vol. 54, No. 28, July 13, 2024
Unless otherwise provided by §
											39.272 (relating to insulation),
						electric fixtures including lamp sockets and lamp bases, plugs, receptacles,
						and the like, shall be so designed and installed that no current-carrying parts
						will normally be exposed externally.
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › LIGHTING FIXTURES AND SIGNS › Section 39.274 - Accessibility and guarding of signs

Current through Register Vol. 54, No. 28, July 13, 2024
(a) Electric signs at an elevation greater
					 than 30 feet above roadways or footways, or at an elevation above a roof
					 greater than the distance from the edge of the roof shall, if they require
					 attendance while in position, be provided with substantial, safely accessible
					 runways, ladders or platforms from which all replacements and other necessary
					 adjustments may be made. Provision for supporting workmen by safety belts
					 should be made in the construction and installation of signs so
					 located.
(b) Electric signs outside
					 buildings shall have no ungrounded current-carrying parts normally exposed to
					 contact of workmen on or in the building. Reference should also be made to
					 §
											39.214(b)
					 (relating to guarding conductors).
(c) The exposed noncurrent-carrying metal
					 parts of a sign should be grounded if within reach of any grounded surfaces,
					 including metal work of the building structure.
This section cited in 34 Pa. Code §
													39.275 (relating to control of
						  outdoor signs).
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › LIGHTING FIXTURES AND SIGNS › Section 39.275 - Control of outdoor signs

Current through Register Vol. 54, No. 28, July 13, 2024
Electric signs, located as noted in §
											39.274 (relating to accessibility
						and guarding of signs), shall be provided with switches arranged to entirely
						disconnect all feed wires of the sign, and either located within sight of the
						sign or arranged so that they may be locked in the open
						position.
Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 39 - SAFETY STANDARDS-GENERAL › Subchapter B - ELECTRIC SAFETY › LIGHTING FIXTURES AND SIGNS › Section 39.276 - Connectors for signs

Current through Register Vol. 54, No. 28, July 13, 2024
Electric signs shall be so arranged that changeable
						connections can be made manually only by approved connectors in which all poles
						of the circuit are simultaneously interrupted. All current-carrying parts of
						pin and socket connectors shall be provided with approved guards so as not to
						be exposed to contact.