Electrical · E-BKSSD

Head House Level 1 Switchboard Riser Diagram

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A new 800-ampere switchboard designated SWB1190SBT operates at 277/480 volts, 3-phase, 4-wire with a 65 KAIC rating. The main bus connects to multiple three-pole breaker circuits with amperages ranging from 80-amp to 400-amp frame sizes and trip ratings, including spare breaker positions and a TVSS unit. A multi-metering device and a ground fault protection unit are integrated into the main feed configuration. Individual breaker designations 1 through 12 distribute power to downstream loads and spare locations.

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