It seems most welders are 3 prong 220/230v plugs that are high amperage. I'd like to use my dryer plug to run my welder so I wanted to make an extension. Unfortunately my dryer plug is 4 wire (2 hot, 1 ground, 1 neutral). How can I make an extension cord to go from 4 wire to 3 wire?
I realize dryers use bonding straps for 3 wire applications and they are removed for 4 wire. Can I hook the neutral to the ground with a wire and run the 2 hots and ground to an end plug... or how should I do this?
Thanks ahead of time. Hopefully an electrician can chime in.
You can make an adapter for your welder from your dryer plug. I would make an extension cord using 10 gauge 3 conductor stranded copper S.O cord with a four plug on one end to a three prong receptacle on the other. The 10 gauge cable will carry 30 amps . Ballard
Use the two hot leads and ground, leave the neutral disconnected and insulated with a wire nut secured in place by electrican's tape. 10-12 gauge is fine for a typical 220v welder, it usually draws less current than a 110v welder does.
I'm using a 10\3 wire the nice flexible kind like an extension cord, don't worry about the extra prong on the male plug. What I did with mine is I took the prong out so that I only have three prongs +, -, and ground, that is all the welder need you don't need to ground the welder chassis which would be the fourth prong.
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The S.O cable that I mentioned earlier in this post is what you want. It is flexible even in the cold it is Sunlight and Oil resistant hence S.O. it is even used on circulating water pumps under water .Three conductor red,white,and black and you are ready. As mentioned in an previous post It is a good idea to keep it to a minimum ,so just use the shortest length as you can get by with. Ballard