Physics, 12.12.2019 06:31 booitsmrradl3385

Alternating-current systems of 50v to 1,000v that supply premises wiring systems shall be grounded where supplied by a three-phase, 4-wire delta-connected system in which the midpoint of one phase winding is used as a circuit conductor. true or false?

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Alternating-current systems of 50v to 1,000v that supply premises wiring systems shall be grounded w...

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