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Old 05-07-2015, 04:39 PM   #1
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electrical wire to use

I am remodeling a 2011 Rockwood pup. I am adding electrical outlets to the exterior. I noticed that the wiring used is 12-2. Can I use 14-2 from the connecting ground fault outlet to the new outlet. Thanks for help....just looked at wire in pup and it is 14-2 but is thinner than what I am use to. The woman at the rv place said that it was 12-2 because it is 12 volt...duh. I think I will use some of the 14-2 that I have. It will be tomorrow before I will probably get to wire it so if anyone has a better idea, I would appreciate it.
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Old 05-07-2015, 05:06 PM   #2
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You can use 14 if it is on a 15 amp breaker. If it is a 20 amp you have to use 12
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Old 05-07-2015, 05:11 PM   #3
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14-2 w/g would be minimum. Why not just use 12-2 w/g like the rest of the trailer. 14 is only good for 15A max and altho the receptacles are no doubt 15A, there are times when whatever you plug in will get close to the 15A and the wire will start to warm. The cost difference between 12 & 14 is negligible.

BTW, I would imagine your trailer is wired with 12-2 W/g instead of just 12-2.
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Old 05-07-2015, 05:29 PM   #4
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The wire looks smaller.....I will shut everything down and check for ground...surely there is ground.
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Old 05-08-2015, 02:05 PM   #5
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I would use 12-2 w/g, nothing smaller.
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Old 05-08-2015, 06:53 PM   #6
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Hi KAOS. Use a rule of thumb - house receptacles are always 12-2wG, 14-2wG is only used on the lighting circuits where it is hard to press the 15amp limit. I would only use 12-2wG for receptacles.
Regards, Al
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Old 05-08-2015, 09:03 PM   #7
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All of the wiring inside the bench is 14-2 w/Ground including the yellow a/c wire. There are three outlets near by and they are all connected with 14-2....

seems like once I send something, i have a hard time getting back in to read any responses...i do appreciate the help.
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Old 05-09-2015, 07:56 PM   #8
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If the trailer already has 14-2, you'll have better results keeping the same size wire if you plan to "jump" from an existing outlet to a new one. RV outlets usually are connected to the wire with a split metal piece (not a screw like household outlets) and the wire is shoved into the split which cuts the insulation and makes the electrical connection. If you jam a 12 wire into a connection that already has a 14 wire in it, the connection to the 14 wire will loosen and possibly arc/overheat. I found this my Rockwood 2604WS when I added 2 outlets inside the camper.
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Old 05-09-2015, 09:53 PM   #9
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Thanks to all of you for helping.
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