Panelboards Sample Clauses
Panelboards. Tenant's distribution and lighting panelboards within its Premises shall be of the three phase, four wire distributed phasing type. Tenant's circuiting shall be arranged to present, as nearly as possible, an evenly balanced load on all phases. Panelboards shall be circuit breaker type. All circuit breakers shall have interrupting capacity at least ten percent (10%) greater than the available fault current at the breaker location. Available fault current will be stated on Tenant's panelboard schedule.
Panelboards. Typewritten directory of circuits in the location provided by panelboard manufacturer. Panelboard identification shall be in the form of an engraved, laminated acrylic or melamine label.
Panelboards. Panelboards shall be UL-listed and conform to the latest issues of the National Electrical Code and NEMA Panelboard Standard PB 1. Panelboards shall be rated for 480 Vac Service or 120/208 Vac service. A minimum of 20% spare breakers shall be provided. A completed directory card and frame shall be provided on the inside of the door.
Panelboards. Contractor shall provide a 480 volt, three-phase, three-wire power distribution panelboard for the building. The bus rating shall be no less than 400A, 42 kAIC. Threepole panelboard feeder circuit breakers shall be provided for all 480 volt equipment including the low voltage power transformers. All spaces shall be filled with 20 A, three-pole spare feeder circuit breakers.
Panelboards. A. Provide panelboards in conformance with the following specification for installation as shown on the drawings.
B. Panelboards – The panelboard shall be a combination service entrance and metering design with main breaker, and distribution breakers as identified on the drawings. The combination unit shall be Nema type 3R rated for outdoor installation. Lugs shall be sized for feeders and shall conform to the specification for splicing and terminations. Buses shall be copper, full panel length. Buses shall be identified. Minimum bus rating shall not be smaller than the setting of the feeder protective device. Provide ground bus in all panelboards.
C. Circuit breakers -Provide molded case bolt-on circuit breakers with thermal magnetic trip units, and a common trip bar for two or three-pole breakers, connected internally to each pole so that the tripping on one pole will automatically trip all poles of each breaker. Handle ▇▇▇▇▇ or clips will not be acceptable. Provide breakers of the trip-free and trip-indicating type, with quick-make, quick-break contacts. Provide single, two or three pole breaker interchangeability. Note that general use outlets on this project require GFCI breakers in the panelboard. GFCI protected outlets in the vault are not acceptable substitutes for a GFCI breaker.
Panelboards. Overcurrent protection, bus capacity, main ratings, AIC rating
Panelboards. Molded case circuit breaker type panelboards to be used for lighting and receptacles.