7.5hp 3phase pressure washer motor. motor rated 21.6 amps FLA +1.6amp burner. What size 3 phase gfi breaker?
October 1, 2009 - 9:56 pm
It’s an italian motor, so it’s hard starting. Any recommendations on breaker/enclosure combo? Nema 3r prefered.
from 2008 NEC
430.52 time delay fuse of not more than 175% fla or inverse time breaker of not more than 250% of fla.
any of the major manufacturers can help you out with the enclosure.
October 2nd, 2009 at 3:41 am
from 2008 NEC
430.52 time delay fuse of not more than 175% fla or inverse time breaker of not more than 250% of fla.
any of the major manufacturers can help you out with the enclosure.
References :
IBEW wireman 15 years.
October 2nd, 2009 at 4:00 am
you need at least a 40 amp breaker
northerntool.com is a good website you could build an entire pressure washer out of their site
References :
October 2nd, 2009 at 4:50 am
Ground fault circuit interrupters are usually required in circuits at the bathroom and marina.I have not seen US 3-pole ACB with GFCI .In the US and Canada, these are called Residual current device 5 to 30ma to ground. combined with 55 ampere continuos rating , 3pole Molded case circuit breaker, with NEMA 3R enclosure.
References :
Residual current device website