Specifications - City of Montpelier, Vermont

Title:Montpelier District Heating16470 $ PanelboardsCity of Montpelier, VTIssue Date:September 28, 2012Page #:5 of 17application requirements comply with UL 67 and NEC Articles230F and G.c. The bussing shall be fully rated with sequentially phased branchdistribution. Panelboard bussing shall be plated copper.d. Interior trim shall be of deadfront construction to shield user fromall energized parts. Main circuit breaker and main lug interiorsshall be field convertible for top or bottom incoming feed.e. Equipment ground bar shall be bonded. Ground bar shall becopper. Solid neutral shall be equipped with a full capacitygrounding strap for service entrance applications. Guttermountedneutral will not be acceptable.f. Nameplates shall contain system information and catalog numberor factory order number. Interior wiring diagram, neutral wiringdiagram, UL Listed label, and Short Circuit Current Rating shall beprovided. Leveling provisions shall be provided for flush mountedapplications.2. Molded Case Circuit Breakers Mains and Branchesa. Common Characteristics1.) Circuit breakers shall be constructed using glass reinforcedpolyester insulating material. Currentcarrying componentsshall be completely isolated from the handle and theaccessory mounting area.2.) Circuit breakers shall have an overcenter, tripfree, toggleoperating mechanism which will provide quickmake,quickbreak contact action. The circuit breaker shall havecommon tripping of all poles.3.) Circuit breaker escutcheon shall have international I/Omarkings, in addition to standard ON/OFF markings.Circuit breaker handle accessories shall provide provisionsfor locking handle in the ON or OFF position.4.) Breaker faceplate shall indicate rated ampacity. Breakerfaceplate shall indicate UL and IEC certification standardsPANELBOARDS 16470 5