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Old 08-08-2012, 12:14 PM   #1
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Romex size

we are in the process of gutting the 1973 31ft and we are wondering for the "re-wiring" what is the size of preference for the romex? 12/2 or 14/2. All will still be on the 30Amp.
Thanks for the help.
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Old 08-08-2012, 12:20 PM   #2
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The 30 amp cord wants to be #10, the 20 amp circuits want to be @12, and any 15 amp circuit should be #14
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Old 08-08-2012, 12:24 PM   #3
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Quote:
Originally Posted by HowieE View Post
The 30 amp cord wants to be #10, the 20 amp circuits want to be @12, and any 15 amp circuit should be #14
thanks howie
So basically we should do
AC in 12/2
Outlets on 14/2
And we will keep the 25Ft cord (looks like #8 to me)
Thanks again
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Old 08-08-2012, 12:30 PM   #4
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Can't go wrong there
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Old 08-08-2012, 12:31 PM   #5
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You should do 20 amp (12/2) for kitchen and bath (hair dryer) specific outlets and microwave if you have one.
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Old 08-08-2012, 12:47 PM   #6
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14/2 is minimum - there is no rule you can't run 12/2 everywhere that 14/2 could be run.

Confirm what you're buying has equal sized & insulated copper ground wire, some grounds run bare and some have smaller or aluminum conductors.... Just one of the things the lowest priced wire tries to sneak home with buyers.
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Old 08-08-2012, 12:59 PM   #7
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I would buy a 250ft roll of 12/2 and call it good. I would only use 14/2 for lights. I ALWAYS use 12/2 for wall outlets. In reality 14/2 is fine especially if you never plan to upgrade to a 50 A or 220V 30A system. I tend to want to plug in space heaters and the system in my AS won't support it. There is one 15A circuit that powers the fridge, univolt, and outlets so there is no much left of that 15A for heaters and such.

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Old 08-08-2012, 01:03 PM   #8
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Yes, 12-2 w/ground. If you prewire for solar, use 8 awg for that in case you want to mount a lot of panels. Airstream uses 10, but for more than a couple of hundred watts, that's not enough. Other wiring would include HDMI for TV to sound system, USB if you don't have a wireless printer or other electronic items, and wiring for wifi booster or cell booster antennas which are mounted on the roof or side.

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Old 08-08-2012, 08:14 PM   #9
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12/2 is fine, just harder to work in small outlet boxes. 14/2 is much easier. Also remember gfci outlets near water.

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Old 08-08-2012, 08:19 PM   #10
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12/2 is fine, just harder to work in small outlet boxes. 14/2 is much easier. Also remember gfci outlets near water.

Jimmy
Stranded Marine grade 12/2 with ground is very pliable and easy to work with. I won't use Romex on ANY RV. Quality never costs in the long run!
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Old 08-09-2012, 05:43 AM   #11
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You got a spec on the 12/2 marine grade? Is it just 12/2 SO cable or something different than that?

Perry
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Old 08-09-2012, 06:22 AM   #12
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Stranded Marine grade 12/2 with ground is very pliable and easy to work with. I won't use Romex on ANY RV. Quality never costs in the long run!


Good Point!
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Old 08-09-2012, 04:30 PM   #13
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You got a spec on the 12/2 marine grade? Is it just 12/2 SO cable or something different than that?

Perry
105ºC rated and fully insulated (including ground). Flame retardant marine wire and cable options meet and exceed requirements from US Coast Guard, ABYC and DOT. Available in single conductor and multi-conductor options for a variety of applications. Multi-conductor marine cable has electro-tinned plated copper conductors with a flame retardant PVC jacketing. Single conductor tinned UL1426 Marine Wire is extra flexible for easy routing and bending through marine applications. The flame retardant PVC jacket provides maximum protection from water, vibration, abrasion and chemicals.
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Old 08-09-2012, 07:20 PM   #14
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Lewster, do you have a mfg preference or a good source that you are willing to share?
tim
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