How many kVA does it take to run a 10hp motor?

Rule of Thumb

How do you calculate generator horsepower?

Real power P(HP) is equal to the 1.34 times of apparent power S(kVA) in kVA and power factor. Hence for converting kVA to HP, P(HP) = 1.34 x S(kVA) x pf.

What size generator do I need to run an electric motor?

Here’s a simple rule for estimating the size of an engine-generator set for motor starting: 1kW of generator set rating per each 3/4 to 1 hp of motor nameplate.

What kVA generator do I need to run a motor?

The Full load input of the motor assuming an efficiency of 80\% and a power factor of 0.8 lag the KVA input at FL = 20 x 0.75 / (0.8 x 0.8) = 23.44 KVA. If the motor is started with FL on the shaft and a starter to limit the starting current, may be you will require about 40 to 45 KVA generator.

How much kVA do I need for a 20hp motor?

When motor is operating, after start, requirement will be 1kva for 1hp i.e. 20hp – 20kva used when running. Amps available on a generator per phase = kva x 1.39. i.e. 20kva = 28amps/phase over 3 phases. NPE provides these calculators and guides to assist with general queries and recommends working with experts to ensure suitability.

How many amps does it take to run a 20kva generator?

Note 3 – A dummy load or extra load will need to be applied to avoid glazing once running. When motor is operating, after start, requirement will be 1kva for 1hp i.e. 20hp – 20kva used when running. Amps available on a generator per phase = kva x 1.39. i.e. 20kva = 28amps/phase over 3 phases.

How big of a motor do I need to power a generator?

Probably 2 1/2 – 3 times the size of the motor or 25-30hp generator. Need to size the voltage and amperage requirements of the motor to the generator. Then decide if the generator can handle the service required in terms of cycle times, etc. “Stupidity has a knack for getting its way.”