Specifications - City of Montpelier, Vermont

Title:Montpelier District Heating16470 $ PanelboardsCity of Montpelier, VTIssue Date:September 28, 2012Page #:14 of 17tripping of all poles.d. Minimum form of visible trip indication shall be a circuit breakerhandle which resides in a position between ON and OFF.e. The exposed faceplates of all branch circuit breakers shall be flushwith one another.f. Lugs shall be UL Listed to accept solid or stranded copper andaluminum conductors. Lugs shall be suitable for 90° C rated wire,sized according to the 75° C temperature rating per NEC Table31016.g. Breakers shall be UL Listed for use with the following factoryinstalled accessories: Shunt Trip, Auxiliary Switch, Alarm Switch.4. Enclosuresa. Type 1 Boxes1.) Boxes shall be galvanized steel constructed in accordancewith UL 50 requirements. Galvanealed steel will not beacceptable.2.) Boxes shall have removable endwalls with knockoutslocated on one end. Boxes shall have welded interiormounting studs. Interior mounting brackets are notrequired.3.) Box width shall not exceed 26 in wide.b. Type 1 Fronts1.) Front shall meet strength and rigidity requirements per UL50 standards. Shall have ANSI 49 gray enamelelectrodeposited over cleaned phosphatized steel.2.) Fronts shall be hinged 1piece with door. Mounting shallbe flush or surface as indicated on drawings.3.) Panelboards rated 250 amperes and below shall have frontswith concealed door hinges and trim screws. Front shallnot be removable with the door locked. Panelboards ratedPANELBOARDS 16470 14