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## Related Questions

###### Asked in Home Electricity

### How do you calculate amperage when given the values of watts and volts?

amps is current
watts is power
volts is voltage
PIV
P=IV
So if you rearrange this to work out the current you have to do
power divided by voltage.
Divide the watts by the volts
Watts = Volts x Amps
Amps = Watts / Volts
Volts = Watts / Amps
<<>>
The equation that you are looking for is I = W/E, Amps =
Watts/Volts.

###### Asked in Powerboats, Watercraft Engine Maintenance

### What size generator do you need to run a 7.5 hp motor?

Conversion from gas to electric should be 750 watts/hp
So 7.5*750=5625 watts
These are running watts so that is a bare minimum. Depending on
the application it needs much more starting watts (up to 3 times
for a compressor).
Generator should be no less than 8000 watts, maybe more if you
work it hard.

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