electrican sent 240v to my rv.
Was having a 30 amp circuit installed to run my air on a 1993 Itasca rv. Electrician screwed up an tried to run on 240. Looks like he smoked the converter, what else can I expect?
Forum Discussion
This is for a CAMPER, Yes there are cases where you could use a 3 wire 240 volt but I have not seen any residential wiring done other than a well (and that is rare) with 240v 3 wire they have not done it for years now. And what would you do with the netural 120' down in the water? IF you had a 2 wire pump ( which has 3 wires hot hot ground) and you only have 4 wire well wire you combine them or dont hook one up at all, on the well and the panel. Like I said you dont screw this up if the outlet has 3 wires I cant see how you could make that mistake these days. That means he did not even bother to look at the outlet. Almost every welder /generator every piece of equipment now has 4 wires if its 240 volt. Read below.
Wire for 220 Circuits
The wire requirements for 220 volt circuits are pretty much the same as for any other circuit - it must be of the proper type for the place that it is being used, it must have sufficient volt - amp capacity, and it must have the correct number of conductors. Proper color coding would also be nice, but isn't a big deal because the exposed lengths of the conductors (in the main panel and in the terminal device) can be colored with paint, tape, or permanent marker. If you are wiring for a dryer, range, or any other 220-110 combo appliance you must use a four conductor wire with an insulated neutral and a separate ground such as X-3-WG. If you are wiring for straight 220 equipment such as a water heater then you can use a three conductor wire such as X-2-WG. The amp rating of the wire should never be less than that of the circuit breaker that is used. You can find a handy wire application / amp rating chart on this page.
Note: You can no longer install 3 wire range or dryer circuits - you must install 4 wire systems for ranges and dryers. If you already have a 3 wire range or dryer then don't worry, your old appliance can be made compatible with a 4 wire system by installing a 4 wire pigtail on it. Then when you buy a new appliance it will plug right in to your new 4 wire system.
Wire for 220 Circuits
The wire requirements for 220 volt circuits are pretty much the same as for any other circuit - it must be of the proper type for the place that it is being used, it must have sufficient volt - amp capacity, and it must have the correct number of conductors. Proper color coding would also be nice, but isn't a big deal because the exposed lengths of the conductors (in the main panel and in the terminal device) can be colored with paint, tape, or permanent marker. If you are wiring for a dryer, range, or any other 220-110 combo appliance you must use a four conductor wire with an insulated neutral and a separate ground such as X-3-WG. If you are wiring for straight 220 equipment such as a water heater then you can use a three conductor wire such as X-2-WG. The amp rating of the wire should never be less than that of the circuit breaker that is used. You can find a handy wire application / amp rating chart on this page.
Note: You can no longer install 3 wire range or dryer circuits - you must install 4 wire systems for ranges and dryers. If you already have a 3 wire range or dryer then don't worry, your old appliance can be made compatible with a 4 wire system by installing a 4 wire pigtail on it. Then when you buy a new appliance it will plug right in to your new 4 wire system.
