SECTION 16466

FEEDER AND PLUG-IN BUSWAY

PART 1 GENERAL

SECTION INCLUDES

Indoor busway and fittings.

Outdoor busway and fittings.

Plug-in units.

RELATED SECTIONS

Section 03300 - Cast-in-Place Concrete.

Section 16190 - Supporting Devices.

Section 16195 - Electrical Identification: Engraved nameplates.

Section 16426 - Distribution Switchboards.

REFERENCES

NEMA AB 1 - Molded Case Circuit Breakers.

NEMA BU 1 - Busways.

NEMA ICS 2 - Industrial Control Devices, Controllers, and Assemblies.

NEMA KS 1 - Enclosed Switches.

NFPA 70 - National Electrical Code.

SUBMITTALS

Submit under provisions of Section [01300.] [_______.]

Shop Drawings: Indicate ratings, dimensions and finishes. Include dimensioned layout diagram, installation details and locations of supports and fittings such as firestops and weatherseals. Include details of wall and floor penetrations.

Manufacturer's Installation Instructions: Indicate application conditions and limitations of use stipulated by Product testing agency. Include instructions for storage, handling, protection, examination, preparation, installation, and starting of Product.

PROJECT RECORD DOCUMENTS

Submit under provisions of Section [01700.] [_______.]

Record actual locations of busway routing [and] [plug-in units].

OPERATION AND MAINTENANCE DATA

Submit under provisions of Section [01700.] [_______.]

Maintenance Data: Include joint re-tightening schedule.

QUALIFICATIONS

Manufacturer: Company specializing in manufacturing the Products specified in this section with minimum [three] [_________] years [documented] experience.

REGULATORY REQUIREMENTS

Conform to requirements of NFPA 70.

Furnish products listed and classified by [UL] [testing firm acceptable to authority having jurisdiction] as suitable for purpose specified and indicated.

PRE-INSTALLATION CONFERENCE

Convene [one] [_______] week prior to commencing work of this Section, under provisions of Section [01039.] [________.]

DELIVERY, STORAGE, AND HANDLING

Deliver, store, protect and handle products to site under provisions of Section [01600.] [________.]

Accept busway on site in factory containers.	Inspect for damage.

Protect from moisture by using appropriate coverings. Store in dry interior locations.

FIELD MEASUREMENTS

Verify that field measurements are as [indicated [on shop drawings].] [instructed by manufacturer.]

SEQUENCING

Sequence work under the provisions of Section [01010.] [________.]

Sequence work to avoid interferences with building finishes and installation of other products.

EXTRA MATERIALS

Furnish under provisions of Section [01700.] [_______.]

Provide [two] [______] of each size and rating of spare fuse.

PART 2 PRODUCTS

MANUFACTURERS

[_____________________________________] Model [_________].

[_____________________________________] Model [_________].

[_____________________________________] Model [_________].

Substitutions: Under provisions of Section [01600.] [________.]

INDOOR BUSWAY

Plug-In Busway: NEMA BU1, 3 phase, [3] [4] wire [low impedance] plug-in busway rated [240] [480] [120/208] [277/480] [___________] volts, 60 Hz. Provide non-ventilated housing with plug-in openings on 24 inch (610 mm) centers each side, with hinged doors to protect opening where plug-in unit is not installed. Ampere ratings as [scheduled.] [indicated on Drawings.]

Feeder Busway: NEMA BU1, 3 phase, [3] [4] wire [low impedance] busway rated [240] [480] [120/208] [277/480] [________] volts, 60 Hz. Provide ventilated housing. Ampere ratings as [scheduled.] [indicated on Drawings.]

Conductors: [Copper] [Aluminum] bars, fully insulated except at joints. Provide [full] [half] neutral. [Provide [insulated] ground bus.]

Joints: Provide single bolt type, with silver-plated contact surface for bus and splice plate.

Provide fittings in accordance with manufacturer's recommendations.

Finish: Baked gray enamel.

OUTDOOR BUSWAY

Outdoor Feeder Busway: NEMA BU1; 3 phase, [3] [4] wire [low impedance] outdoor busway rated [240] [480] [120/208] [277/480] [_____] volts, 60 Hz. Provide galvanized steel housing with sealed seams and drain holes with removable plugs. Ampere ratings as [scheduled.] [indicated on Drawings.]

Conductors: [Copper] [Aluminum] bars insulated with Class 130C material except at joints. [Provide [full] [half] neutral.] [Provide [insulated] ground bus.]

Joints: Provide single bolt type, with silver-plated contact surface for bus and splice plate.

Provide fittings in accordance with manufacturer's recommendations.

Finish: Baked gray enamel.

PLUG-IN UNITS

Feeder Units: Compatible with busway; enclosure with hinged door and externally operatable handle for [stick] [chain] operation, lockable in OFF position; provide interlock to prevent opening front cover with switch in ON position. [Provide insulated grounding stab.]

Molded Case Thermal-Magnetic Circuit Breakers: NEMA AB 1, circuit breakers with integral thermal and instantaneous magnetic trip in each pole.

Fusible Switch Assemblies: NEMA KS 1, quick-make, quick-break, load interrupter enclosed knife switch. Fuse Clips: Designed to accommodate Class [R] [J] fuses.

Combination Controllers:	Combine controllers with [motor circuit protector] [fusible switch] disconnect in common enclosure, compatible with busway. Provide enclosure with hinged door and externally operatable handle for [stick] [chain] operation, lockable in OFF position; provide interlock to prevent opening front cover with switch in ON position.

Motor Circuit Protector:	NEMA AB 1, circuit breakers with integral instantaneous magnetic trip in each pole. [Provide adjustable instantaneous magnetic trip for frame sizes [____] amperes and larger.]

Fusible Switch Assemblies: NEMA KS 1, quick-make, quick-break, load interrupter enclosed knife switch. Fuse Clips: Designed to accommodate Class [R] [J] fuses.

Full Voltage Motor Controllers: NEMA ICS 2, AC general-purpose Class A magnetic controller for induction motors rated in horsepower, full voltage starting, [reversing] [nonreversing] type.

Two Speed Motor Controllers:	[One] [Two] winding, [constant torque] [variable torque] [constant horsepower] type. [Include integral time delay transition between FAST and SLOW speeds.]

Coil Operating Voltage: [120] [480] [____] volts, [[60] [____] Hz.] [DC.]

Motor Controller Overload Relay:	NEMA ICS 2, [bimetal] [melting alloy.]

Auxiliary Contacts: NEMA ICS 2, [2] [___] [normally [open] [closed]] [field convertible] contacts in addition to seal-in contact.

Control Power Transformers: [120] [____] volt secondary, [[___] va minimum, in each motor controller.] [as scheduled.]

FUSES

Manufacturers:

[__________________________________] Model [_______].

[__________________________________] Model [_______].

[__________________________________] Model [_______].

Substitutions: Under provisions of Section [01600.] [_______.]

Description:	[Dual element,] current limiting, [time delay,] one-time fuse, [250] [600] volt, Class [RK 1.] [RK 5.] [J.] [as indicated [on Drawings].]

Interrupting Rating: 200,000 rms amperes.

PART 3 EXECUTION

PREPARATION

Do not install busway when installation location is not protected from moisture.

INSTALLATION

Install busway and accessories in accordance with manufacturer's instructions.

Tighten joints using a torque wrench, to manufacturer's specified values.

Install busway length with expansion fitting at each location where busway run crosses building expansion joint.

Mounting and Support: Mount horizontal busway runs in [flatwise] [upright] position [as indicated], in accordance with Section 16190. Support busway at maximum [10] [___] foot ([3] [___] M) intervals [as recommended by manufacturer]. Support vertical riser at each floor.

Install busway with integral fire stops located where busway penetrates fire-rated walls and floors. Seal around opening to maintain fire-rating equal to wall or

floor rating.

Provide concrete curb around interior floor penetrations.

Install busway with integral weather seal located where busway penetrates [exterior wall] [roof]. Provide [wall] [roof] flange and seal around opening to maintain weathertight installation.

Provide engraved plastic nameplates under the provisions of Section 16195.

Select and install heater elements in motor starters to

match installed motor characteristics.

Motor Data: Provide neatly typed label inside each motor starter door identifying motor served, nameplate horsepower, full load amperes, code letter, service factor, and voltage/phase rating.

FIELD QUALITY CONTROL

Field [inspection and] testing will be performed under provisions of Section [01400.] [________.]

DEMONSTRATION

Provide systems demonstration under provisions of Section [01650.] [______.]

Demonstrate location and use of each busway plug-in unit.

SCHEDULES

END OF SECTION