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Open Roads Forum  >  Tech Issues

 > Adding a dedicated RV power plug. What would you do?

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Big Katuna

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Posted: 05/16/19 01:31pm Link  |  Quote  |  Print  |  Notify Moderator

I added a 50A recep but breakered it 30A.

This lets you use #10 wire and 30A is plenty for both acs, fridge, etc.


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Posted: 05/16/19 01:49pm Link  |  Quote  |  Print  |  Notify Moderator

The 50 amp circuit (240v 50a) will probably at least triple the cost of materials. With the 50 amp circuit, you'll need two 50 amp hot wires and one neutral plus a ground wire. For the 30 amp circuit (120v 30a) you'll only need one hot wire and one neutral and one ground. The 50 amp RV circuit is capable of providing almost 4 times as much power. They'll be more more wires and heavier wires needed to be legal.


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Posted: 05/16/19 01:56pm Link  |  Quote  |  Print  |  Notify Moderator

That is kind of what I expected, but on my central A/C install estimate, the 240v for the A/C is $145, and the 120V/30amp for the RV, which will be going to the same location, is $125. Not much difference there. That's what got me thinking about upgrading it to 50amp in the first place.


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TurnThePage

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Posted: 05/16/19 02:02pm Link  |  Quote  |  Print  |  Notify Moderator

BB_TX wrote:

50/30/20 panel for $120

Don’t know you would ever use 50 unless you, or someone else, wanted to run two A/Cs.
Thanks for that link. MUCH cheaper than the ones I was finding!

westernrvparkowner

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Posted: 05/16/19 02:07pm Link  |  Quote  |  Print  |  Notify Moderator

TurnThePage wrote:

I'm finally adding central air to my house, which affords me an opportunity to also wire in dedicated RV power.

Their price for a basic 30 amp wall plug install is very reasonable, but I'm considering going for the gusto and getting a box with 50/30/20 and breakers. I don't need 50 amp service, but it might be good to have for possible but doubtful upgrades, and maybe it will add a little value to the homestead when I get around to selling.

I'm assuming those boxes, which are expensive, must be already internally wired and simply need to be connected to a source. Is that correct? Does anybody ever NEED 50 amp to their RV when at home? And does anybody know if the 30 amp and 20 amp are on the same leg (in phase)?
Yes, those pedestals are properly wired with all the recepticals and breakers installed. I was always amazed they could be sold as cheap as they are. You should be able to find one retail for less than $400.00.
As for need, you don't need AC in your house or even indoor plumbing, but it sure is nice to have both. Same with 50 ampservice.

BFL13

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Posted: 05/16/19 02:13pm Link  |  Quote  |  Print  |  Notify Moderator

So is 50a 240v anyway, so you just do that as well as the 240 A/C, and then just get your 30a and 15a 120v by the usual adapters? That would eliminate the risk of ending up with 30/240.

I don't have 50a so it is a mystery to me.


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imgoin4it

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Posted: 05/16/19 02:13pm Link  |  Quote  |  Print  |  Notify Moderator

I would put in a regular 50 amp panel . If you want to plug in 30 amps just use your adapter. If ever you want 50;amps you’ll have it. I see no reason to put in a 50, 30, 20 receptacle. Save a few bucks there and spend a few more for the 50 amp.


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Posted: 05/16/19 02:27pm Link  |  Quote  |  Print  |  Notify Moderator

I "need" 50A in the Phoenix area.

I would expect that the 20A and 30A plugs are wired to each 50A leg in the above linked box.


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Posted: 05/16/19 02:48pm Link  |  Quote  |  Print  |  Notify Moderator

BFL13 wrote:

So is 50a 240v anyway, so you just do that as well as the 240 A/C, and then just get your 30a and 15a 120v by the usual adapters? That would eliminate the risk of ending up with 30/240.

I don't have 50a so it is a mystery to me.
50A RV plugs supply both 120V and 240V as needed. But it's a rare RV that has 240V appliances because they don't work on 20A or 30A pedestals. Hence many RVers just consider 50A as having 2 120V 50A circuits.

MDKMDK

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Posted: 05/16/19 03:19pm Link  |  Quote  |  Print  |  Notify Moderator

TurnThePage wrote:

MDKMDK wrote:

I would consult a qualified electrician, and pay for an expert installation, with quality of workmanship guarantees, if I decided to do something like this.
It IS being professionally done. I'm simply trying to learn from my fellow RVers before I commit to a course of action. The "phase" question was simply inquiring how much 120v amperage would be available.

I think I'll keep it simple and get a basic 50 amp install, then use the dogbone adapters I already own to step it down. No need for all the complication.

Thanks for the replies!


My response was more aimed at the expected DIY responses. No offense intended.


Mike.

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