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New Member
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Dec 28, 2011, 08:12 AM
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Adding 14/2 to 12/2
I'm running a 12/2 wire from the box to a 20amp GFCI. I'm pig tailing another 12/2 to another 20amp GFCI in order to have two GFCI plugs in a new bath. I now want to add a 14/2 wire to a new exhaust fan. The 14/2 would come off the load side of the GFCI to the fan which is over a shower. It's rated for wet location as long as it's connected to a GFCI. The second GFCI would be the one protecting the fan. Is this OK and what amp breaker would I use in the box.
Shipbdan
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Printers & Electronics Expert
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Dec 28, 2011, 09:48 AM
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Hold on there, please.
If you introduce a 14 AWG cable into this environment, the entire circuit would have to be reduced to a max load of 12 amps.
This violates several electrical codes.
The receptacles must be on a 20 amp circuit.
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New Member
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Dec 28, 2011, 10:58 AM
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Thanks for your reply: Should I change the GFCI, wire and fuse to 15amps or continue to run 12 AWG to the switch of the fan that controls the lights? Do I even need a 20amp circuit here?
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Electrical & Lighting Expert
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Dec 28, 2011, 02:01 PM
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Originally Posted by donf
If you introduce a 14 AWG cable into this enviroment, the entire circuit would have to be reduced to a max load of 12 amps.
Not true. The circuit would have to be reduced to a 15A breaker, which is a waste of 5 amps for the sake of one piece of #14.
A 15A circuit can have a max load of 15A.
Originally Posted by donf
This violates several electrical codes.
True.
Originally Posted by donf
The receptacles must be on a 20 amp circuit.
True
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Electrical & Lighting Expert
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Dec 28, 2011, 02:02 PM
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Originally Posted by roadie66
Thanks for your reply: Should I change the GFCI, wire and fuse to 15amps or continue to run 12 AWG to the switch of the fan that controls the lights? Do I even need a 20amp circuit here?
Continue to run #12. DO NOT reduce wire size in a circuit.
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Printers & Electronics Expert
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Dec 28, 2011, 07:18 PM
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"Originally Posted by donf:
If you introduce a 14 AWG cable into this enviroment, the entire circuit would have to be reduced to a max load of 12 amps.
"Not true. The circuit would have to be reduced to a 15A breaker, which is a waste of 5 amps for the sake of one piece of #14. A 15A circuit can have a max load of 15A."
I'm sorry, did I misapply NEC 210.21(B) and Table (210.21(B)(2)?
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