Electrical Motors and Heat Loss

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Heat gain from electrical motors to the surroundings

As a rule of thumb the heat loss from an electrical motor during operation can be estimated as

Size of Motor (kW)	Heat Loss (Watts/kW)
0 - 2	250
3 - 15	150
15 - 150	100
150 -	80

1 kW = 1.34 hp
1 hp = 0.746 k W

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