Re: Electrical hookup questions

You need to know what the capacity of your house electrical system is. The easy way is to look at the rating of the 'Main' breakers. Around here they are usually either 100 Amp or 200 Amp. Next check the breaker box for any open slots for new breakers. These are usually at the bottom. Lastly, see how much current is already allocated, by adding up the ratings of all the breakers which are already there.

It is very likely that the sum of the breakers is bigger than the main, because you don't run all the circuits at max all the time. But you don't want to exceed it by several hundred percent. So let us say that you have 200 amps, and the breakers add up to 220 amps. Adding another 30 amps should not be any problem at all. On the other hand, if you have 100 amps in and 300 amps of breakers there already, adding 30 more amps is not wise.

Assuming you have a space for a breaker and enough extra capacity, get a 30 amp, single phase breaker, and wire capable of handling 30 amps. This should be easy to find, I think 15 amps is the smallest breaker you can get. However if you can't, you can get a dual phase 30 amp breaker (the so called '220 volt' breaker) and use just one side of it. The wire should have 2 conductors and 1 ground. The size will depend on the distance you run it, and the type will depend on whether it is inside a wall, exposed (better to run it in conduit) or under ground.

Put a socket which matches the 30 amp plug on your RV, and you are in business.

Home Depot is not RV Depot. You almost never run 220 to a RV. For 50 amp RVs, you run 2, 110v circuits 180 degrees out of phase, with 50 amps on each one. This requires wire with 3 conductors and a ground.