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What is the armour cable size for 45kw 3phase ac motor 2965rpm?
Wiki User
∙ 10y ago
At 2965 rpm it sounds like an induction motor for a 50 Hz supply.
A 45 kW motor would draw about 55 kW from the supply with a power factor of 0.85, so that is 65 kVA, and on a 415 v 3-phase supply that is a current of 90 amps. For armoured XLPE cale the size needed is at least 16 mm2
Probably 25 mm2 would be preferred for a permanent installation but it would depend on how the cable is installed, how much free air movement there is around it etc.
Wiki User
∙ 10y ago
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