final bid specs 09328.pdf - Freese and Nichols, Inc.
final bid specs 09328.pdf - Freese and Nichols, Inc.
final bid specs 09328.pdf - Freese and Nichols, Inc.
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
B. Manufacturer shall have produced similar electrical equipment for a minimum period of five<br />
(5) years. When requested by the engineer, an acceptable list of installations with similar<br />
equipment shall be provided demonstrating compliance with this requirement.<br />
2.00 PRODUCTS<br />
2.01 PANELBOARDS<br />
A. Panelboards shall consist of a box, front, interior <strong>and</strong> circuit protective devices <strong>and</strong> shall be<br />
manufactured in accordance with NEMA PB1 <strong>and</strong> bearing the applicable U.L. labels.<br />
B. Panelboards shall be four wire, three phase as scheduled or required. Panelboards shall be<br />
NEMA 1 for air conditioned spaces, NEMA 12 Steel for ventilated areas <strong>and</strong> NEMA 3R for<br />
exterior locations <strong>and</strong> suitable for surface mounting. Panelboards shall contain sequence<br />
style busing <strong>and</strong> full capacity neutral, composed of an assembly of bolt-on, molded case,<br />
automatic breakers with thermal <strong>and</strong> an instantaneous, magnetic trip in each pole <strong>and</strong> a tripfree<br />
position separate from either the "On" <strong>and</strong> the "Off" positions. Two (2) <strong>and</strong> three (3) pole<br />
circuit breakers shall simultaneously open all poles. Circuit breakers, molded case <strong>and</strong><br />
branch circuits shall be in accordance with Fed. Spec. W-C-375.<br />
C. The voltage rating, phase, number of wires <strong>and</strong> ampere rating shall be as indicated <strong>and</strong><br />
scheduled on the plans.<br />
D. The panelboard box shall be fabricated of code gauge, galvanized sheet steel in accordance<br />
with U.L. st<strong>and</strong>ards <strong>and</strong> have turned edges around the front for rigidity <strong>and</strong> frontal clamping.<br />
Provide st<strong>and</strong>ard knockouts on the panel enclosures.<br />
E. The panelboard front shall be fabricated of sheet steel <strong>and</strong> finished with a baked on gray<br />
enamel over a rust inhibitor. Each front shall have a door mounted on semi-concealed hinges<br />
with a cylinder lock, an index card <strong>and</strong> a card holder. Panelboard locks shall be master<br />
keyed, with two (2) keys furnished for each panel board. Index cards shall be properly<br />
typewritten.<br />
F. The interior of the panelboard shall consist of a factory-assembled, rigid frame supporting the<br />
rectangular bus, the mains <strong>and</strong> the neutral bar.<br />
G. Busings shall be tin-plated copper <strong>and</strong> arranged for sequential phasing throughout. The bus<br />
bar shall be sized so that the temperature rise is limited in accordance with NEMA st<strong>and</strong>ards.<br />
The insulated neutral bar shall be located at the opposite end of the structure from the mains.<br />
H. Panelboards shall have either solderless lugs or a main circuit protective device as<br />
scheduled. Each enclosure shall have grounding lugs <strong>and</strong> uninsulated equipment grounding<br />
terminals.<br />
2.02 CIRCUIT BREAKERS<br />
A. Panelboards shall be equipped with circuit breakers.<br />
B. Circuit breakers shall be molded case, bolt in type. Series rating of breakers is not acceptable.<br />
C. Single pole circuit breakers serving fluorescent lighting loads shall have the SWD marking.<br />
Circuit breakers serving air conditioning branch loads shall be U.L. listed as type HACR.<br />
Lighting <strong>and</strong> Branch Panelboards 26 24 16-2<br />
DRP09328
Change language