Take care not to have any loose strands that may touch other connectors or wires. Once you get the wires and prongs matched up, then it is a simple matter of loosening the screws and placing the wires in their place. If you have 4 wire cord and wiring to a 3-prong plug, make sure the white wire is safely out of the way. Just make sure nothing touches the neutral prong. You will connect the two hot wires to the two hot prongs and the green ground wire will go to the green prong or pin. When you are wiring a 3-wire cord to a 4-pronged outlet, you are not going to be connecting the neutral wire. Make sure the power is off or your wires are disconnected from any source. There is a way to do that but it is not recommended for everyone. Some people are very careful and have done this type of work without shutting off the power. The first step in the process is to make sure you are not connected to any power when you attempt this or any wiring task. If you don’t then you will either get a short, a shock, or possibly a fire. The key is to make sure you connect the correct wires to their corresponding prong or pin. One thing we have found out during our research is that you will get a variety of opinions on this topic. However, this is not meeting any code regulations, and good electricians will not do it or recommend that you do it. The way it is supposed to work is if the neutral and ground wires are connected at the bus bar or at the plug. It is not recommended to plug into a 3-wire 50-amp outlet with a 4-wire 50-amp plug, even with an adaptor. ![]() The best advice that we saw was for anyone thinking of doing this they should get a 50-amp to 30-amp adaptor and plug it into a 30-amp outlet. ![]() But what the experts are saying is that the RV system will not work without that neutral wire. Normally, you would simply drop the neutral, white, wire and only use the the two hots and the ground. This is not so easy to do if you are working with your RV’s electrical system. What the subtitle is hinting at though is if can you rewire a 4-wire plug to go into a three-pronged outlet. ![]() There are many websites and YouTube videos showing you how to do that. All you need will be two hot wires and a ground in this situation. Yes, you can as many 220 or 240-volt appliances only come with 3 wires and a 3-prong plug.
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