I'm hiring an electrician to run a 50 amp line at my daughter's house for my RV. I only need 50amps because I have two A/C units. It's a 30' toy hauler. No W/D hookups. Everything is 110 (I believe). Having a difficult time telling the electrician exactly what I need, since I don't really know myself. My cord is a four post cord. What should he run?? He's saying 220, but I don't want to blow stuff up. ANY info on this basic question would be appreciated. I've just never been able to grasp the concept. Please use small words, lol.

Your electrician is right. It is the standard 110/220 volt Rv service. Jerry Parr

Before you have this done make sure the electrician knows what you need. It is not a normal 220V circut it is two 110V. There have been several posts with pictures on this issue. If you install the wrong one it can cause severe damage to you rig.

Tell him it is a standard 14-50R 125/250 volt receptacle.I know what I am talking about.

12th Man Fan wrote:Before you have this done make sure the electrician knows what you need. It is not a normal 220V circut it is two 110V. What the electrician is describing is a normal 240 (not 220) circuit. Also, the standard today is 120 volts. If your residential outlets are only delivering 110 volts your service is close to being below the standard which is 120 volts +/-10%.What screws people up is the old services that were THREE wire 220 volt services where there is no neutral. The standard outlet for one of those looks similar to a 30 amp rv outlet. However, the 30 amp rv plug will not fit those outlets. Unfortunately people have either forced their plog into one of those outlets oe modified the outlet to accommodate the plug. That I where bad things happen. Four wire to four wire is fine almost 100% of the time (extreme human error not withstanding).

Print off the info on the following link and give it to him. It has all the necessary info for RV 50 amp hookup. It is essentially the very same as your house, 120/240 vac single phase/split phase.http://www.myrv.us/electric/Also here is another site with great info to help understand it.https://www.rvtravel.com/rv-electricity-power-principals-50-amp-shore-power/

Electricity? Never touch the stuff | Good Sam Community

westernrvparkow
Explorer
Aug 14, 2019
12th Man Fan wrote:
Before you have this done make sure the electrician knows what you need. It is not a normal 220V circut it is two 110V.

What the electrician is describing is a normal 240 (not 220) circuit. Also, the standard today is 120 volts. If your residential outlets are only delivering 110 volts your service is close to being below the standard which is 120 volts +/-10%.
What screws people up is the old services that were THREE wire 220 volt services where there is no neutral. The standard outlet for one of those looks similar to a 30 amp rv outlet. However, the 30 amp rv plug will not fit those outlets. Unfortunately people have either forced their plog into one of those outlets oe modified the outlet to accommodate the plug. That I where bad things happen. Four wire to four wire is fine almost 100% of the time (extreme human error not withstanding).
Chris_Bryant
Explorer II
Aug 14, 2019
Tell him it is a standard 14-50R 125/250 volt receptacle.
I know what I am talking about.
12th_Man_Fan
Explorer
Aug 14, 2019
Before you have this done make sure the electrician knows what you need. It is not a normal 220V circut it is two 110V.

There have been several posts with pictures on this issue. If you install the wrong one it can cause severe damage to you rig.
Flute_Man
Explorer
Aug 14, 2019
Your electrician is right. It is the standard 110/220 volt Rv service.

Jerry Parr

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