Electrical · E-E22YJ

Switchboard "5Mdsbb"

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This electrical single line diagram details switchboard 5MDSBB rated at 1600 amperes, 480Y/277 volts, three phase, four wire, with a 65,000 AIC interrupting rating. The distribution bus feeds multiple circuits including a 400-ampere breaker for panel C-1, a 175-ampere breaker for air handling unit AHU-1R, a 500-ampere breaker for AHU-1S, and spare breaker spaces. A 50-ampere breaker supplies a 30 KVA step-down transformer feeding subpanel 5MLB1 at 208Y/120 volts through a 100-ampere main breaker.

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