How much hp motor is required to run a 5 kva generator?

Question

How much hp motor is required to run a 5 kva generator?

Answer 1

6.7 HP would be an absolute minimum.  Because of system losses (bearing friction, motor inefficiences such as 'iron' loss and IR loss) you should add about 15% to that 6.7 and make it 7.7.  You *might* get by on a 7.5 HP motor, but 8 would be better.

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Answer 2

1 hp = 745 W so you'd need, at minimum, a 6.7-hp motor.

Answer 3

You will need a 10 HP engine to run your 5 kw generator that is engine efficiency included.

Hp=kw/75

     =5/0.75

     =6.7 this is only output Hp

since motor HP rating are in BHp,m your BHP could be 10 or lesser if the efficiency is better than 75%.