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Anonymous users2024-01-24Three-phase motor, 380V, 4 square copper wire is sufficient.
Single-phase 220V motor, current of more than 80A, to use 16 square copper wire.
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Anonymous users2024-01-23According to the normal power, it needs 6 square meters.
For 380V three-phase 140 kW power consumption, a 400A circuit breaker is required for the main switch, but each branch and each individual device should be equipped with a separate switch, not just one main switch.
3800 kilowatts?
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The total number of three phases is 280KW, and the current per phase is 420A, so use a 185 or 240 cable. Considering that the cables on the market have different degrees of shrinkage, it is recommended to use 240. Basis:
20 kW, at least 10-16 square millimeters of copper wire is required. It depends on the wiring. Single-phase 20 kW load is not counted.
93KW electrical appliances, the use of three-phase power supply, the current is about 245A, check the national "500 volt copper core insulated wire long-term continuous load allowable current carrying meter" can be known to use 95 square millimeters copper core power cable.