Job Recruitment Website - Property management - Excuse me, the electricity consumption of 65 dormitories is about 1 10 kW. If three-phase four-wire is used, how many copper wires should be used?
Excuse me, the electricity consumption of 65 dormitories is about 1 10 kW. If three-phase four-wire is used, how many copper wires should be used?
At present, most of the dormitory lighting is fluorescent, and its power factor is low, about 0.5 ~ 0.7.
1 10kw lighting, total current =110000/(1.732× 380× 0.6) = 278a. Because the electricity consumption of dormitory lighting is not long, it can be calculated as 2.6 ~ 2.8 amps per square: 278/2.6 ~ 2.8 = 99 ~ 107 (square). Because the power consumption time is relatively concentrated and there is a certain margin, it is recommended to choose 120 square copper core cable.
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