Specifications - City of Montpelier, Vermont

Title:Montpelier District Heating16470 $ PanelboardsCity of Montpelier, VTIssue Date:September 28, 2012Page #:6 of 17with applicable voltage systems and corresponding AICratings.5.) Circuit breakers shall be factory sealed and shall have adate code on the face of the circuit breaker. Poles shall belabeled with respective phase designations.6.) Standard construction circuit breakers shall be UL Listedfor reverse connection without restrictive line or loadmarkings. Circuit breakers shall be suitable for mountingand operating in any position.7.) Circuit breakers equipped with line terminal jaws shallmeet the following requirements. In the event of a shortcircuit condition, the increased magnetic flux shall causethe jaws to grip the supply bus more firmly.8.) Circuit breakers equipped with line terminal jaws shall notrequire any additional external mounting hardware. Circuitbreakers shall be held in mounted position by a selfcontained bracket secured to the mounting pan by fasteners.Each individual circuit breaker shall be capable of beingmounted independently. Circuit breakers of different framesizes shall be capable of being mounted across from eachother.9.) Lugs shall be UL Listed to accept solid or stranded copperand aluminum conductors. Lugs shall be suitable for 90° Crated wire, sized according to the 75° C temperature ratingper NEC Table 31016. Lug body shall be bolted in place;snapin designs are not acceptable.a.)Circuit breakers shall be UL Listed for use with thefollowing accessories: Shunt Trip, Under VoltageTrip, Auxiliary Switch, Alarm Switch, GroundFault Shunt Trip, Electrical Operators, CylinderLocks, Mechanical Lugs Kits, Compression LugsKits, and Handle Accessories.b. Thermal Magnetic1.) Circuit protective devices shall be molded case circuitPANELBOARDS 16470 6