Wire size?


Old 05-22-08, 07:21 PM
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Wire size?

Installing a steam generator. 240v, single phase. 38 amps. Documentation says a 60amp breaker. What size wire should I use? #10 or #8? Also, the generator is going to be 3 feet from the main panel. Should I put the wiring in coduit or just use clamps? See any need for a disconnect between the unit and the panel?

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Old 05-22-08, 07:29 PM
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does it list a minumum circuit ampacity?

If not, then you would need to use #6. #8 is not good for 60 amps.

and to the install method: personal choice.

No need for a disconnect due to the fact of the proximity to the panel.
Old 05-23-08, 08:36 AM
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With a 60A breaker, #6 copper hots with #10 ground would be the correct size. THHN conductors in conduit or 6/2g NM-B Romex cable would be okay.

I'm surprised the manuf. didn't suggest 50A breaker: 38A * 125% = 47.5A. If that was the case, #8 copper hots with #10 ground in conduit would be okay (not 8/2g NM-B Romex).

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