Electrical · E-KA5ZQ

IT Power Distribution Board Single-Line Diagram

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An IT power distribution board (SWB1206XPI) is fed by a 112.5 kVA K-13 rated transformer (TNF1204XLI) stepping down from 480V to 208Y/120V, 3-phase, 4-wire power. The transformer is grounded with a 3/4-inch conduit containing one 1/0 AWG ground conductor. The distribution board features a 400 amp bus with a 42 kAIC rating, protected by a 400AT/400AF 3-pole main breaker. Sub-feed connections include a 100A 3-pole panel (EDP1205XLI) rated at 10 kAIC and additional three-pole breaker positions rated at 100AT/100AF.

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