Specifications - City of Montpelier, Vermont

Title:Montpelier District Heating16470 $ PanelboardsCity of Montpelier, VTIssue Date:September 28, 2012Page #:4 of 171. CrouseHinds/Cooper Industries2. Cutler Hammer, Eaton Corp.3. General Electric Co.4. Siemens Energy & Automation, Inc.5. Square D Co.B. Specifications have been based upon Square D, however, manufacturers above areacceptable.2.2 PANELBOARDS, GENERAL REQUIREMENTSA. Overcurrent Protective Devices (OCPDs): Provide type, rating, and features asindicated.B. Enclosures: Cabinets, flush or surface mounted as indicated. Provide NEMAType 1 enclosure, unless indicated otherwise.C. Special Features: Provide the following features for panelboards as indicated.1. Isolated Equipment Ground Bus: Adequate for branchcircuit equipmentground conductors; insulated from box.2. Hinged Front Cover: Entire front trim hinged to box with standard doorwithin hinged trim cover.2.3 POWER DISTRIBUTION PANELBOARDSA. Circuit Breaker Distribution Panelboard1. Interiora. Shall be rated 600 VAC or 250 VDC maximum. Continuous maincurrent ratings as indicated on drawings not to exceed 1200amperes maximum. Panelboard bus current ratings shall bedetermined by heatrise tests conducted in accordance with UL 67.b. Provide UL Listed short circuit current ratings (SCCR) asindicated on the drawings not to exceed the lowest interruptingcapacity rating of any circuit breaker installed with a maximum of200,000 rms symmetrical amperes. Main lug and main breakerpanelboards shall be suitable for use as Service Equipment whenPANELBOARDS 16470 4