A dwelling unit is supplied by a single-phase, 120/240 V service. The electric load of the unit

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A dwelling unit is supplied by a single-phase, 120/240 V service. The electric load of the unit includes:

(1) 7000 VA water heater, 240 V;

(2) 500 VA vent fan, 120 V;

(3) 1200 VA compactor, 120 V;

(4) 7500 VA dryer, 240 V.

Each appliance is served by one branch protected by a circuit breaker.

(a) Determine the rating and the number of poles of each circuit breaker.

(b) Assuming that all the appliances have the same power factor, estimate the minimum percent unbalanced current between the two phases.

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Energy Efficient Electrical Systems For Buildings

ISBN: 9781482258332

1st Edition

Authors: Moncef Krarti

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Question Posted: Apr 29, 2024 03:01 AM

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A dwelling unit is supplied by a single-phase, 120/240 V service. The electric load of the unit

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Energy Efficient Electrical Systems For Buildings

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