**November 21, 1997**

**Contract \# TW-0928**

**SPECIAL SPECIFICATION**

**SECTION 16466-S**

**[BUSWAYS]{.underline}**

[Page]{.underline}

[PART 1 - GENERAL]{.underline}

1.01 Related Documents 2

1.02 Summary 2

1.03 Submittals 2

1.04 Quality Assurance 3

1.05 Delivery, Storage, and Handling 3

1.06 Project Conditions 4

[PART 2 - PRODUCTS]{.underline}

2.01 Manufacturers 4

2.02 Busway 4

2.03 Plug-In Units 5

[PART 3 - EXECUTION]{.underline}

3.01 Installation 5

3.02 Adjusting 6

3.03 Cleaning 6

3.04 Testing 6

3.05 Demonstration 7

3.06 Protection 7

**SPECIAL SPECIFICATION**

**SECTION 16466 - S**

**[BUSWAYS]{.underline}**

[PART 1 - GENERAL]{.underline}

1.01 [RELATED DOCUMENTS]{.underline}

A. Drawings and general provisions of the Contract, including General
and Supplementary Conditions and Division 1 Specification Sections,
apply to this Section.

1.02 [SUMMARY]{.underline}

A. This Section includes the following:

1\. Busways and fittings.

2\. Plug-in units.

1.03 [SUBMITTALS]{.underline}

A. General: Submit the following according to the provisions of
Specification Section 1300-S.

B. Product data for each component. Include electrical ratings,
dimensions, mounting position, mounting method, vertical supports,
materials, fire stops, and weather stops.

C. Shop drawings detailing fabrication and installation of busways,
including plans, elevations, sections, details of components, and
attachments to other construction elements. Detail supports and
connections to building.

D. Coordination drawings, including floor plans and sections drawn to
accurate scale. Submit with shop drawings. Show busway layout and
relationships between components and adjacent structural and mechanical
elements. Show support locations, type of support, and weight on each
support. Indicate and certify field measurements.

E. Qualification data for firms and persons specified in the \"Quality
Assurance\" Article to demonstrate their capabilities and experience.
Include a list of completed projects with project names, addresses,
names of Architects and Owners, and other information specified.

F. Field test reports indicating and interpreting test results relative
to compliance with specified requirements.

1.04 [QUALITY ASSURANCE]{.underline}

A. Testing Agency Qualifications: In addition to the requirements
specified in Division 1 Section \"Quality Control Services,\" an
independent testing agency shall meet OSHA criteria for accreditation of
testing laboratories, Title 29, Part 1907, or shall be a Full Member
company of the International Electrical Testing Association.

1\. Testing Agency\'s Field Supervision: Person currently certified by
the International Electrical Testing Association or National Institute
for Certification in Engineering Technologies to supervise the on-site
testing specified in Part 3.

B. Comply with NFPA 70 \"National Electrical Code\" for components and
installation.

C. Listing and Labeling: Provide products specified in this Section that
are listed and labeled.

1\. The Terms \"Listed\" and \"Labeled\": As defined in the \"National
Electrical Code,\" Article 100.

2\. Listing and Labeling Agency Qualifications: A \"Nationally
Recognized Testing Laboratory\" (NRTL) as defined in OSHA Regulation
1910.7.

D. Single-Source Responsibility: All busway components shall be the
product of a single manufacturer.

1.05 [DELIVERY, STORAGE, AND HANDLING]{.underline}

A. Deliver, store, and handle according to NEMA BU 1.1.

1.06 [PROJECT CONDITIONS]{.underline}

A. Field Measurements: Verify existing dimensions by field measurements.
Verify clearances and locate obstructions within manufacturing and
installation tolerances of busway.

[PART 2 - PRODUCTS]{.underline}

2.01 [MANUFACTURERS]{.underline}

A. Available Manufacturers: Subject to compliance with requirements,
manufacturers offering busways that may be incorporated in the Work are
the following:

1\. The Calvert Co., Inc.

2\. Cutler-Hammer Products; Eaton Corp.

3\. Electric Busway, Inc.

4\. Electrical Distribution & Control; General Electric Co.

5\. Siemens Energy & Automation, Inc.

6\. Square D Co.

B. [Substitutions]{.underline}: only under provisions of Section 1600-S.

2.02 [BUSWAY]{.underline}

A. Plug-In Busway: NEMA BU 1, indoor application, low-impedance busway
in nonventilated housing, single-bolt joints, ratings as indicated and
specified.

1\. Voltage: 120/208 volts, 3 phase, 100 percent neutral capacity and
277/480 volts, 3 phase, 100 percent neutral capacity.

2\. Short-Circuit Withstand: 200,000 symmetrical rms amperes.

3\. Temperature Rise: 55 deg C above 40 deg C ambient maximum.

4\. Bus Materials: Current-carrying copper conductors, fully insulated
with Class 130C insulation except at stabs and joints; plated surface at
stabs and joints.

5\. Ground Bus: Copper.

6\. Enclosure: Aluminum, plug-in openings at 24 inches (610 mm) on
center, hinged covers over unused openings. The enclosure shall be
designed and manufactured to exclude water from entering a joint. The
test for compliance shall be water applied in a stream from a 1 inch
nozzle delivering a minimum of 5 gallons per minute from 10 feet
directly above the busway and contacting the busway not more than 18
inches from the joint. Any leakage that may occur shall drain out of
bottom weep holes which sshall be located in tdhe bus enclosure to
eliminate the possibility of water accumulation or condensation build-up
in any part of the busway system.

7\. Fittings and Accessories: Manufacturer\'s standard elbows, equipment
terminations, firestops, expansion fittings, spring-mounted vertical
riser supports, rigid floor supports, horizontal hangers, tap fittings,
and flange fittings.

2.03 [PLUG-IN UNITS]{.underline}

A. Molded-Case Circuit Breakers: NEMA AB 1; hookstick-operated handle,
lockable with 2 padlocks, interlocked with cover in CLOSED position;
frame size, trip rating, number of poles, and auxiliary devices as
indicated; interrupting capacity rating to meet available fault current,
14,000 symmetrical rms amperes minimum on 208V system, 25,000 symetrical
rms amperes minimum on 480V system.

[PART 3 - EXECUTION]{.underline}

3.01 [INSTALLATION]{.underline}

A. Install busway level and plumb, according to manufacturer\'s written
instructions, shop drawings, and referenced standards.

B. Support busway:

1\. Design each fastener and support to carry 200 pounds (90 kg) or 4
times the supported weight of the busway, whichever is greater.

2\. Support busway with not less than 3/8-inch (10-mm) steel rods.
Install side bracing to prevent swaying or movement of busway. Modify
supports after completion to eliminate strains and stresses on bus bars
and housings.

3\. Fasten supports securely to building structure using channel
pre-imbedded in waffle slab ribs according to structural drawing
details.

C. Install expansion fittings at locations where busway crosses building
expansion joints with no more than 90 percent of the manufacturer\'s
recommended distance between fittings.

D. Install firestop fittings where busway penetrates fire-rated elements
such as walls, floors, and ceilings. Seal around penetration according
to Division 7 Section \"Firestopping\" to satisfy authority having
jurisdiction.

E. Tighten busway joints with torque wrench or similar tool recommended
by busway manufacturer. Retighten joints after busways have been
energized for 30 days.

F. Install busway plug-in units. Support connecting conduit
independently of plug-in unit.

G. Connect busway and components to wiring system and to ground as
indicated and instructed by manufacturer. Tighten connectors and
terminals, including screws and bolts, according to equipment
manufacturer\'s published torque tightening values for equipment
connectors. Where manufacturer\'s torquing requirements are not
indicated, tighten connectors and terminals according to tightening
torques specified in UL Standard 486A.

3.02 [ADJUSTING]{.underline}

A. Align busway runs horizontally to eliminate sags and twists. Provide
additional stiffeners if required to restrict excessive movement.

3.03 [CLEANING]{.underline}

A. After completing system installation, including outlet fittings and
devices, inspect exposed finish. Remove burrs, dirt, and construction
debris, and repair damaged finishes including chips, scratches, and
abrasions.

3.04 [TESTING]{.underline}

A. Testing Agency: Provide the services of a qualified independent
testing agency to perform specified field quality-control testing.

B. Testing: After installing busway and after electrical circuitry has
been energized, demonstrate product capability and compliance with
requirements.

1\. Procedures: Perform each visual and mechanical inspection and
electrical test stated in NETA Standard ATS, Section 7.4. Investigate
any insulation resistance reading less than 100 megohms divided by
busway length in feet (30 megohms divided by busway length in meters).
Certify compliance with test parameters.

C. Remove and replace malfunctioning units with new units, and retest.

D. Infrared Scanning: Two months after Substantial Completion, perform
an infrared scan of busway including joints and plug-in units.

1\. Use an infrared scanning device designed to measure temperature or
detect significant deviations from normal values. Provide documentation
of device calibration.

2\. Perform 2 follow-up infrared scans of busway 4 months and 11 months
after Substantial Completion.

3\. Prepare a certified report identifying busway checked and describing
results of scanning. Include notation of deficiencies detected, remedial
action taken, and rescanning observations after remedial action.

3.05 [DEMONSTRATION]{.underline}

A. Train Owner\'s maintenance personnel on procedures and schedules for
startup and shutdown, troubleshooting, servicing, and preventive
maintenance.

B. Review data in the \"Operating and Maintenance Manual.\" Refer to
Division 1 Section \"Project Closeout.\"

C. Schedule training with Owner through the Architect, with at least 7
days\' advance notice.

3.06 [PROTECTION]{.underline}

A. Provide final protection and maintain conditions in a manner
acceptable to Manufacturer and Installer to ensure that moisture does
not enter busway prior to Substantial Completion.

END OF SECTION