can i use house 30 amp

[Eric50317]

Yes. You can use a 30 amp 240 volt dryer outlet to power Most of your RV. This is equivalent to 60 amp of 120V. Which is twice the power of a traditional 30 amp rv plug.
Go purchase a dryer cord at any Home Depot, Lowe's etc. Also purchase a 50 amp RV Cord Female receptacle. Wire the 50 Amp to the end of the purchased dryer cord. Plug into dryer outlet and your RV cord. The 30 amp breaker in the house will trip if you overload. You will not be able to run three ACs. But can run two on separate circuit. In your RV two AC are run on one of the legs of the 240 and the other one is on the other leg. You can easily figure which is which. Nothing in your RV is 240 V.
I have done this for years with no problems.

[bigb56]

Originally Posted by Eric50317

Yes. You can use a 30 amp 240 volt dryer outlet to power Most of your RV. This is equivalent to 60 amp of 120V. Which is twice the power of a traditional 30 amp rv plug.
Go purchase a dryer cord at any Home Depot, Lowe's etc. Also purchase a 50 amp RV Cord Female receptacle. Wire the 50 Amp to the end of the purchased dryer cord. Plug into dryer outlet and your RV cord. The 30 amp breaker in the house will trip if you overload. You will not be able to run three ACs. But can run two on separate circuit. In your RV two AC are run on one of the legs of the 240 and the other one is on the other leg. You can easily figure which is which. Nothing in your RV is 240 V.
I have done this for years with no problems.

No doubt a person can make a quality adapter that way and I have done so for my welders but for the person who isn't skilled or just doesn't want to take the time they are readily available in the market to go from a 14-30 to a 14-50.

[jerichorick]

Originally Posted by gweedo295

Hello all, mu son in law is wanting to put in a 50 amp outlet on the side of his house. he has a dryer outlet in the house not being used, its a 30-amp it has 4 wire, r b w g, it has a 30-amp breaker.

can he hook the 4 wires to the 50-amp outlet and be safe? doesn't the 4-wires make it 220? is the rv 50-amp 220.

any ideas what to do?

thnx

Haven't read all the posts so you may know this already. A 30A RV service is 120V. A 30A dryer service is 240V. Not healthy for your RV.

[THenne1713]

To clarify, if it is THREE WIRE DRYER RECEPTACLE, NO WILL NOT WORK.

[TandW]

It should be obvious to those of us who follow threads from their initial post that this one has died. Unless you like comedic responses from the lurkers.

[bigb56]

Originally Posted by jerichorick

Haven't read all the posts so you may know this already. A 30A RV service is 120V. A 30A dryer service is 240V. Not healthy for your RV.

You only need to read the first post to see this is not the case, the OP is using a 4 wire 120/240 30 amp hookup which won't have as many amps as a true 50 but twice that of a 30 amp 120 service.

[bigb56]

Originally Posted by THenne1713

To clarify, if it is THREE WIRE DRYER RECEPTACLE, NO WILL NOT WORK.

It is 4 wire, (240/120) per initial post and will work fine.

[Dan104]

Yes, a 50 amp RV service is 220 volt, two pole circuit, 50 amps per line or phase, which gives you a maximum of 100 amps. Each line to neutral is 120 volts and line to line is 220 volts. If ether line uses over 50 amps the two pole breaker will trip. If you have a two pole 30 amp circuit, it can be used with no issues. It will give you 220 volt, 30 amps per line or phase. which will give you a maximum of 60 amps. A 50 amp receptacle can be put on a 30 amp circuit. If ether line uses more than 30 amps the breaker will trip as it should.

[Persistent]

OMG! 6 pages of amateur advice. There are many ways to make a 240 volt split phase RV work with a 240 volt dryer outlet. Most would not meet wiring code. Wiring code is there for safety.

I recommend you say thank you to all the helpful posters and get advice from an electrician.

Wiring that becomes part of the house should be done according to wiring code. So I would not recommend connecting a 50 amp 240 volt split phase RV outlet socket to a 30 amp 240 volt dryer circuit.

First, code only allows one outlet socket on the dryer circuit. It should not be a 50 amp outlet, only 30.

30 amp dryer outlets typically are 3 wire or 4 wire. 3 wire dryer outlets are missing a ground connection required for the 50 amp RV system.

There are lots of code specification for running a 240 volt split phase branch circuit in a home. It could take a while for your son to learn all the requirements so he could safely do that.

If the 50 amp 240 volt RV shore power cord can reach the existing 30 amp 240 volt split phase dryer socket, you could buy or make an adapter. This assumes the dryer socket is 4 pin. The adapter would not be part of the house wiring and would thus not violate code.

The RV system would have limited power available. The home 30 amp circuit breaker would protect the home branch circuit and trip if the RV system tried to draw more than 30 amps on either leg.

I wish you good luck and happy trails ahead!

[bigb56]

Originally Posted by Persistent

Wiring that becomes part of the house should be done according to wiring code. So I would not recommend connecting a 50 amp 240 volt split phase RV outlet socket to a 30 amp 240 volt dryer circuit.

First, code only allows one outlet socket on the dryer circuit. It should not be a 50 amp outlet, only 30.

Not exactly, see post #41, a 50 amp recep on a 30 amp circuit does not violate code, and yes I was a licensed electrical contractor in Arizona. In fact my license is still valid but I put it on hold when I retired in case I want to come back.

[paul65k]

Originally Posted by Winemaker2

One way to do what you want and stay within code and not create confusion down the road would be to leave the 30A 240/120V 4 wire receptacle and just use a dog bone adapter to use your 50A 240/120V cord.
https://www.amazon.com/ONETAK-Weldin...a-773008836197

Originally Posted by ArtJoyce

30 amp dryer outlet is not compatible with rv 30 amps. I think you have a good chance of smoking something. The big diffrence is the dryer has two hot 120v legs that read 240 across them. The rv 30 amp has one hot 120v leg.

Art, that's not what he said.... he said to use a 4 wire 30A dryer plug (120/240V) and then create a dog bone that would connect to the 50A connector in the coach.

This would create 2X the power of a standard 30A (120V) by having 2 lines available at 30A vs just one in a standard 30A (RV plug) that is shared by all circuits. This is even better if you can limit the input through your inverter(s) if they are hybrid...I have Victron inverters and this is possible through the control panel. This will limit the draw on the shore power to the level you set.

In any case, the worst thing that would happen if wired as a 30A 120/240 dryer outlet with the appropriate adapter is it will pop the breaker if the system is trying to draw too much power on each line.

This is also a very good solution due to the fact that a dryer outlet (120/240) is wired with the 2 hot legs out of phase so there is no chance that the neutral return line can become overloaded.

[paul65k]

Originally Posted by Persistent

OMG! 6 pages of amateur advice. There are many ways to make a 240 volt split phase RV work with a 240 volt dryer outlet. Most would not meet wiring code. Wiring code is there for safety.

I recommend you say thank you to all the helpful posters and get advice from an electrician.

Wiring that becomes part of the house should be done according to wiring code. So I would not recommend connecting a 50 amp 240 volt split phase RV outlet socket to a 30 amp 240 volt dryer circuit.

First, code only allows one outlet socket on the dryer circuit. It should not be a 50 amp outlet, only 30.

30 amp dryer outlets typically are 3 wire or 4 wire. 3 wire dryer outlets are missing a ground connection required for the 50 amp RV system.

There are lots of code specification for running a 240 volt split phase branch circuit in a home. It could take a while for your son to learn all the requirements so he could safely do that.

If the 50 amp 240 volt RV shore power cord can reach the existing 30 amp 240 volt split phase dryer socket, you could buy or make an adapter. This assumes the dryer socket is 4 pin. The adapter would not be part of the house wiring and would thus not violate code.

The RV system would have limited power available. The home 30 amp circuit breaker would protect the home branch circuit and trip if the RV system tried to draw more than 30 amps on either leg.

I wish you good luck and happy trails ahead!

I agree with this ^^^^ completely!!!

[Alan_Hepburn]

Originally Posted by Dan104

Each line to neutral is 120 volts and line to line is 220 volts.

Nope - line-to-line is 240V...

[Ray,IN]

Originally Posted by dchrismer

You will need #6 wires, 50-amp breaker, 50-amp receptacle and only need 2-power wires from the circuit breaker and 1-ground wire from the circuit breaker panel.
Anything with 4-wires is usually 3-phase power for which RV's don't have

PLEASE - PLEASE, read and re-read this information: https://www.myrv.us/electric/