Specifications - State of Delaware

SECTION 262900 - MOTOR CONTROLLERS, CONTACTORS, PUSH BUTTONS, SELECTOR
SWITCHES, INDICATING LIGHTS AND RELAYS: continued
2.04 CONTACTORS:
A. Provide electrically or mechanically held lighting contactors, as indicated.
B. Provide multipole: Number-poles as indicated or required.
C. Each pole shall be rated 480Vac, 30 amperes ballast, and 20 amperes tungsten. Each pole shall
be field convertible (NO or NC).
D. Provide contactor in NEMA 1 surface mount or 3R surface mount enclosure, as indicated.
E. Contactor shall have 120V, 60-Hz coil.
F. Provide "Hand-Off-Automatic" selector switch in contactor cover.
G. Provide red and green indicating lights in contactor cover.
H. Provide an integral fused control circuit transformer of adequate volt-ampere capacity for the
required control circuit loads.
I. Provide NEMA 1 type enclosures with suitably sized factory standard knock-outs in bottom in
indoor dry locations of enclosure. Provide NEMA 4 and 4X type with suitably sized conduit
hub in top and bottom of enclosure in outdoor and wet indoor locations.
J. Provide two-wire control for electrically held contactors. Provide three-wire control for
mechanically held contactors.
K. Provide auxiliary contacts as required, indicated and specified.
L. Provide nameplate in accordance with NEC 409.110 where the minimum short-circuit rating
(SCCR) shall be as indicated on the drawings.
2.05 RELAYS:
A. Provide industrial 600Vac relays with 10 ampere NEMA B600 rated contacts. Contact
cartridges shall be removable and field convertible (NO or NC). Coil voltage rating shall be as
required. Provide number of contacts as required, indicated or specified.
B. Provide accessory latching and timing modules as required.
C. Provide NEMA 1 enclosure when relay is mounted separately in dry indoor locations.
PART 3 - EXECUTION
3.01 EXAMINATION:
A. Examine areas and conditions under which motor controllers and controls are to be installed.
Do not proceed with the work until unsatisfactory conditions have been corrected.
3.02 INSTALLATION OF MOTOR CONTROLLERS AND CONTROLS:
A. Install motor controllers and controls where indicated, in accordance with equipment
manufacturer's written instructions and with recognized industry practices; complying with
applicable requirements of NEC, UL and NEMA standard, to ensure that products fulfill
requirements.
B. Tighten connectors and terminals, including screws and bolts, in accordance with equipment
manufacturer's published torque tightening values for equipment connectors. Where
manufacturer's torquing requirements are not indicated, tighten connectors and terminals to
comply with tightening torques specified in UL Standard 468A and the National Electrical
Code.
C. Install fuses, of sizes indicated, and type specified in each fusible disconnect switch, if any.
D. Provide seismic bracing such that the equipment will not be damaged during a Seismic Zone
2A event.
DEAN262900.DOC 262900-7