I've got a 3/4 HP pump motor that's rated for a 32 amp starting, 9 amp
nominal current req'mt at 230 VAC, single phase. The manufacturer recommends
a 20 amp breaker.
The essential question is what the minimum watt/amp reqm't of a generator
needs to be to start and run this pump. Am I correct that at surge capacity
of at least 7.5 Kw is req'd to meet the starting current reqm'ts of the
motor or am I thinking about this wrong ? Would a 2.5Kw genset work, for
I'm not sure I understand how electric motors start and why a 20 amp circuit
breaker would work when the starting current exceeds the breaker rating and
also how a genset would respond to a momentary surge-draw.
As always, TIA ...
17 years ago