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Wed 10 Apr, 2019 07:04 pm
Im running a new circuit for a milling machine, this unit requires 220v 10 amps. Im using 10 2 romex for this circuit, what size breaker should i use, 10, 20, or 30 amp?
A motor might require much more than 10 amps when starting or at some point in normal operation. Follow the manufacturer's instructions.
@Carmen43p,
well I can get you to the point of rating your breaker to the wire size, which 10 gauge wire is only rated up to a 30 amp breaker.
Continuous motor loads require you multiply by 125% 1.25
@Carmen43p,
For 220v at least you need 30 amp.
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