Complete Compiled Specification.pdf - Peck Ormsby Construction

SECTION 16425 – SWITCHBOARDS 600 VOLTS & BELOW
PART 1 - GENERAL
1.1 WORK INCLUDED:
A. Furnish and install the service entrance switchboard and distribution switchboards as herein
specified and shown on the associated electrical drawings.
1.2 SUBMITTALS:
A. Submit complete descriptive shop drawings indicating bus arrangement, overcurrent devices,
labeling, dimensions, ratings and other pertinent data.
PART 2 - PRODUCTS
2.1 ACCEPTABLE MANUFACTURERS:
A. Square D, General Electric, Siemens, Cutler-Hammer/Westinghouse
B. Requests for substitution of other products will be considered if submitted in accordance with
Section 01630.
2.2 EQUIPMENT:
A. Each distribution board section shall be free standing and have an open bottom. Top and
bottom conduit area is to be clearly shown and dimensioned on the shop drawings. All front
plates used for mounting meters, selector switches or other front mounted devices shall be
hinged with all wiring installed and laced with flexibility at the hinged side. All closure plates
shall be screw removable and small enough for easy handling by one man. The paint finish
shall be gray enamel over a rust-inhibiting phosphate primer.
B. Overcurrent devices shall be of size and type as indicated on the drawings. Series rated
equipment will not be permitted as a substitute for the interrupting capacities stated on the
one line diagram.
C. Main lugs shall be tool applied compression type if aluminum wire is used. The bus bars
shall be rigidly braced for 100,000 amps and sized as indicated on the drawings.
D. The end section is to have bus bar provisions for future addition of a switchboard section.
The provisions shall include the bus bars installed to the extreme side of the switchboard and
prepunched to facilitate future bolted splice plates.
E. Where fusible switches are indicated, they shall have Class R or L fuse clips. Fusible
switches shall be of the positive, quick-make, quick-break type and external operating handle
shall be suitable for padlocking in the "OFF" position. All units shall be dead front. Provide a
spare fuse cabinet.
F. Current limiting circuit breakers shall interrupt the current flow within a quarter cycle.
SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDITION March 2, 2009
SWITCHBOARDS 600 VOLT & BELOW 16425-1