262416_Panelboards.pdf
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- Attached to
- Chicopee Armory Renovations Sub-Contractor Bids
- Solicitation number
- S125144-vCurrent
- Issued by
- Hampden County, Massachusetts
About this file
This document is a scope of work for the Chicopee Armory Rehabilitation project in Chicopee, Massachusetts. The scope outlines the requirements for providing panelboards for this project, including the codes and standards that must be met, the required submittals, and the approved manufacturers. The panelboards must be of the sizes, ratings, and arrangements shown on the drawings, and must be provided complete with all overcurrent devices, accessories, and trim. The short circuit rating of the assembled panelboards and each overcurrent device must meet or exceed the panel rating, and series rated combinations are not permitted. The panelboards must have copper bus, 100% rated neutral bus, and copper ground bus, and must be designed for sequence phase connection to allow for the installation of one, two, or three-pole branch circuit breakers.
The panelboards must be installed in accordance with the project requirements, and must be labeled with arc flash warning labels and OSHA clearance labels. The project is being procured through a state and local contract opportunity in Massachusetts, but no additional details on the procurement process or timeline are provided in the document.
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Text version
CHICOPEE ARMORY REHABILITATION MMD PROJECT NO. 985010
CHICOPEE, MASSACHUSETTS ISSUED FOR BID – 05/20/11
10090 PANELBOARDS 262416-1
SECTION 262416
PANELBOARDS
PART 1 - GENERAL
1.1 GENERAL
A. The provisions of Section 260500, General Requirements for Electrical Work, apply to the
Work of this Section.
1.2 CODES AND STANDARDS
A. Products shall comply with the following codes and standards and shall be UL-listed and labeled:
NEMA AB-1 Molded Case Circuit Breakers
NEMA PB-1 Panelboards
UL 50 Enclosures for Electrical Equipment
UL 67 Panelboards
UL 489 Molded Case Circuit Breakers and Circuit Breaker Enclosures
UL 943 Ground Fault Circuit Interrupters
1.3 SUBMITTALS
A. Manufacturer's product data sheets.
B. Circuit breaker schedules.
C. Dimensioned plans, elevations, sections and details.
1.4 MANUFACTURERS
A. Subject to compliance with the requirements of this Section:
Cutler-Hammer
General Electric
Siemens
Square D
PART 2 - PRODUCTS
2.1 GENERAL
A. Panelboards shall be of the sizes, rating and arrangement shown on the Drawings.
B. Panelboards shall be provided complete with all overcurrent devices, accessories and trim.
C. All panelboards shall be provided with safety barriers for dead front construction.
10090 PANELBOARDS 262416-2
D. The required short circuit ratings of assembled panelboards are shown on the drawings.
The short circuit rating of every overcurrent device in the panel shall meet or exceed the panel rating. Unless otherwise noted on the drawings, series rated combinations will not be permitted.
E. Provide through-feed or sub-feed lugs as indicated on panel schedules.
2.2 CABINETS
A. Boxes shall be code gauge galvanized sheet steel.
B. Trim shall be code gauge steel, ANSI-61 gray finish with stainless steel flush type lock/latch handle. All locks shall be keyed alike.
C. Trim for surface mounted panels shall be door-in-door construction such that the gutter space may be exposed by a hinged door.
D. Directory frames shall be metal frame with plastic covers.
2.3 BUS
A. All bus work shall be copper.
B. Neutral busses shall be 100% rated with adequate connections for all outgoing neutral conductors.
C. Panelboards shall be provided with copper ground busses.
D. Bus shall be designed for sequence phase connection to allow the installation of one, two or three pole branch circuit breakers in any position.
2.4 OVERCURRENT DEVICES
A. Overcurrent devices shall be trip-free molded case, bolt-on, thermal-magnetic circuit breakers.
B. Main circuit breakers shall be individually mounted and bolted to bus assembly. Back-fed branch mounted circuit breakers are prohibited.
C. Front faces of all circuit breakers shall be flush. Trip indication shall be clearly shown by the handle position between the ON and OFF positions.
D. Ground fault and arc fault circuit breakers shall require no more panel space than standard breakers.
E. All connections shall be rated for 75° C copper conductors.
10090 PANELBOARDS 262416-3
PART 3 - EXECUTION
3.1 PANELBOARDS
A. Panelboards shall be labeled in accordance with Section 260500, General Requirements for
Electrical Work.
B. Panelboards shall be installed in accordance with Section 260550, Installation of Electrical
Equipment.
C. Panelboard covers are required to have 2 labels. The first, an Arc flash warning label and the second, an OSHA label requiring 3 feet clearance in front of the panel.
END OF SECTION 262416
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