 alkizmo
join:2007-06-25
Pierrefonds, QC
kudos:1 | reply to cowboyro
Re: Smaller size wire on 20A circuit for dedicated purpose? Until the pros come here...
From the NEC rule 240.5(B)(2) : 20A circuits can supply: 18AWG, up to 50 ft of run length; 16AWG, up to 100 ft; 14AWG and larger for any length.
This is not a quote of the actual rule, but it came from a very reliable website
»ecmweb.com/code-basics/flexible-···ure-wire |
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 John GaltForward, MarchPremium
join:2004-09-30
Happy Camp
kudos:5
1 edit | said by alkizmo:Until the pros come here...
From the NEC rule 240.5(B)(2) : 20A circuits can supply: 18AWG, up to 50 ft of run length; 16AWG, up to 100 ft; 14AWG and larger for any length.
This is not a quote of the actual rule, but it came from a very reliable website
»ecmweb.com/code-basics/flexible-···ure-wire
Citing this section of the Code is completely wrong. It is specifically for flexible cords and fixture wires, something completely different than what the OP is trying to deal with.
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The most powerful weapon in the world is ignorance. Politicians exploit it to achieve almost anything they want.
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 cdruGo ColtsPremium,MVM
join:2003-05-14
Fort Wayne, IN
kudos:7 | reply to alkizmo
said by alkizmo:Until the pros come here...
From the NEC rule 240.5(B)(2) : 20A circuits can supply: 18AWG, up to 50 ft of run length; 16AWG, up to 100 ft; 14AWG and larger for any length.
240.5 applies to "Protection of Flexible Cords, Flexible Cables, and Fixture Wires." While all the details of the installation are mentioned, I have a feeling your code doesn't apply here as cowboyro is likely talking about NM cabling. Fixture wiring is more like lamp cords.
240.4(D)(3) does however apply saying that 14ga copper has a max current of 15 amps after any correction factors apply. The whole circuit must be protected by a 15 amp breaker if the 14ga wire is used. This however is against NEC at least back to 2008 which requires at least 1 20amp circuit to a bathroom. It sounds like the only solutions are to run a 15 amp circuit along with the 20 amp one, or to use a different existing 15-amp circuit for the lighting. |
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