I just moved my motorhome to a new indoor storage location that has a dedicated electrical panel that I'm allowed to modify. The unit has several 15 amp plugs already installed. It has one 50 AMP I think 250 volt outlet, but the circuit breaker is labeled as 208 volt. I'm not an electrician so I don't know which it is. So the question, can that 250 volt outlet be converted to a 50 AMP RV outlet? I know the 50 amp RV outlet has two 120 volt legs. Should this existing 208 or 240 or 250 volt (I guess I'll have to figure that out for sure) have the correct wiring for the RV outlet? It would be nice to have as that will allow me to run the A/C units while in storage as I plan on doing some work on it while indoors.

msmith1199 wrote:I just moved my motorhome to a new indoor storage location that has a dedicated electrical panel that I'm allowed to modify. The unit has several 15 amp plugs already installed. It has one 50 AMP I think 250 volt outlet, but the circuit breaker is labeled as 208 volt. I'm not an electrician so I don't know which it is. So the question, can that 250 volt outlet be converted to a 50 AMP RV outlet? I know the 50 amp RV outlet has two 120 volt legs. Should this existing 208 or 240 or 250 volt (I guess I'll have to figure that out for sure) have the correct wiring for the RV outlet? It would be nice to have as that will allow me to run the A/C units while in storage as I plan on doing some work on it while indoors.Read and if you understand Install.This is the best I can do - I'm 2,700 miles away - If in doubt just call an electrician, really simple.Best of Luck,

If it is a NEMA 14-50 connector like a campground you are good to go.208 is just two legs of three phase service and will operate same as split phase. This is code compliant for RVs. Both legs are still 120v to neutral.

I don't plan on doing it myself. I know enough about electricity to know I don't mess with it. That is unless it's just a matter of changing the outlet, then I can do that. The outlet that is in it now is a three prong so I think it's supplying 240 volts versus the four prong RV plug.

Busskipper wrote:msmith1199 wrote:I just moved my motorhome to a new indoor storage location that has a dedicated electrical panel that I'm allowed to modify. The unit has several 15 amp plugs already installed. It has one 50 AMP I think 250 volt outlet, but the circuit breaker is labeled as 208 volt. I'm not an electrician so I don't know which it is. So the question, can that 250 volt outlet be converted to a 50 AMP RV outlet? I know the 50 amp RV outlet has two 120 volt legs. Should this existing 208 or 240 or 250 volt (I guess I'll have to figure that out for sure) have the correct wiring for the RV outlet? It would be nice to have as that will allow me to run the A/C units while in storage as I plan on doing some work on it while indoors.Read and if you understand Install.This is the best I can do - I'm 2,700 miles away - If in doubt just call an electrician, really simple.Best of Luck,On that link the existing outlet is the NEMA 6-50R that is posted. Note on the face it says 250 volts which is where I got the 250 number from in my original question. The single pole breaker that is in the box has "208 Volt Outlet" written on it. So I assume it's 240 volts? So what I get from this link is the current outlet is probably three wire versus the four wire that I need for the RV outlet.

msmith1199 wrote:On that link the existing outlet is the NEMA 6-50R that is posted. Note on the face it says 250 volts which is where I got the 250 number from in my original question. The single pole breaker that is in the box has "208 Volt Outlet" written on it. So I assume it's 240 volts? So what I get from this link is the current outlet is probably three wire versus the four wire that I need for the RV outlet.No, you should assume it is 208 and is very common in commercial power.Electrician just needs to pull a neutral and swap the 6-50 for a 14-50 and you are all set.250 is just the maximum rating of the connector.

50 Amp Electrical hookup | Good Sam Community

13 Replies

msmith1199
Explorer II
Jul 02, 2017
I don't plan on doing it myself. I know enough about electricity to know I don't mess with it. That is unless it's just a matter of changing the outlet, then I can do that. The outlet that is in it now is a three prong so I think it's supplying 240 volts versus the four prong RV plug.
time2roll
Nomad
Jul 02, 2017
If it is a NEMA 14-50 connector like a campground you are good to go.
208 is just two legs of three phase service and will operate same as split phase. This is code compliant for RVs. Both legs are still 120v to neutral.
Busskipper
Explorer
Jul 02, 2017
msmith1199 wrote:
I just moved my motorhome to a new indoor storage location that has a dedicated electrical panel that I'm allowed to modify. The unit has several 15 amp plugs already installed. It has one 50 AMP I think 250 volt outlet, but the circuit breaker is labeled as 208 volt. I'm not an electrician so I don't know which it is.

So the question, can that 250 volt outlet be converted to a 50 AMP RV outlet? I know the 50 amp RV outlet has two 120 volt legs. Should this existing 208 or 240 or 250 volt (I guess I'll have to figure that out for sure) have the correct wiring for the RV outlet? It would be nice to have as that will allow me to run the A/C units while in storage as I plan on doing some work on it while indoors.

Read and if you understand Install.

This is the best I can do - I'm 2,700 miles away - If in doubt just call an electrician, really simple.

Best of Luck,

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50 Amp Electrical hookup

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