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#45074 11/18/04 08:31 PM
Joined: Sep 2003
Posts: 35
A
Member
I need to install a rotary phase converter tomarrow and haven't had time to research as much as I had wanted. If anyone can help it would be greatly appreciated.

Here are the specs:

Runs 220V three phase equipment (In this case an ice cream maker) from a 220v single phase source. The motor is 3 H.P. I'll be installing it approx 30ft from main panel to a 3 phased disconnect then to the phase converter.

My question is what size wire should I use for the branch circuit conductors and what size breaker at the panel? I had already run #12 Romex assuming a single phase 220v load protected by a 2-pole 20. However, the customer got a good deal on a 3 phase ice cream maker. I'm not sure if #12 will still be OK.

Again, any comments would be greatly appreciated.

Joined: Mar 2002
Posts: 582
R
Ron Offline
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You will have to identify what the nameplate states for minimum circuit amps, and max breaker size, then work from there. If it says #12 is ok, then it's ok. It will probably have a 30 or 35A max breaker size.


Ron

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