How to size temporary generators
How to size temporary generators
(OP)
I need to order a generator for a 60amp service, 110/220 single phase, four wire application.
What is correct Kw genset or how do I calculate Kw?
What is correct Kw genset or how do I calculate Kw?






RE: How to size temporary generators
You also need to take into account any harmonic loads -- fluorescent lights, computers, VFD's, etc. So long as harmonic loads are less than about 50% of generator rating, you should be OK.
Then check your total kW load against the generator kW rating.
Your generator vendor would likely give you free assistance with this. Otherwise, check out the generator websites for applications literature & software for assistance. Failing all that, hire an engineer.
RE: How to size temporary generators
220V x 60A = 13200VA
or to 110V and 220V, leading to:
220V x 60A = 13200VA
and
120V x 60A = 7200VA
total = 20400VA
RE: How to size temporary generators