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Old 11-22-2012, 03:25 AM   #11
Antler
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Originally Posted by Antler

Gotcha, won't be moving the system, so GFCI breaker I'd prefer. Hope to get this wiring done soon, so i can drywall the basement. Ill wire up the outlet and run the cable myself. An electrician friend will look it over and tie it all into my panel.

Thanks for the fast replies everybody I really appreciate it.
So I need a 60 amp GFCI breaker, 25' of #6 AWG cable, and a 240v outlet rated for 60amps, correct?


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Old 11-22-2012, 03:45 AM   #12
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Probably going to want an outlet that carries the neutral so a 4 conductor outlet, that way you have 120VAC available for the pumps and such. If you get the cable at Home Depot or similar they usually list the amperes its good for, because if for some silly reason it has only 60C insulation it might not actually be good for 60A by code. Or could double check with your electrician friend to make sure there isn't some funky local code.

Cable would be 4/c or 3/c w/ gnd.


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Old 11-22-2012, 04:40 PM   #13
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Originally Posted by porcupine73 View Post
...If you get the cable at Home Depot or similar they usually list the amperes its good for, because if for some silly reason it has only 60C insulation it might not actually be good for 60A by code. ...
To expound further, the whole circuit and all connections must be considered in the OCP/ampacity. Ampacity is limited to the weakest link.

IOW, doesn't matter if the wire is rated 75A @ 90C if the weakest link is a termination rated at 60C. Then only the 60C ampacity rating would apply to the entire circuit.
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Old 11-22-2012, 04:45 PM   #14
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That's true, I'm just going with 75C because all the modern breakers I see for home panels usually say 60C/75C. Older breakers I imagine there are probably lots rated only for 60C.
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Old 11-22-2012, 04:49 PM   #15
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Yeah, didn't mean to imply you were wrong or anything...and I don't know what's all out there for ratings on new and old things. Was just hoping to build upon what you started, reinforcing there is more to the story than just what the wire size is.


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