Electrical Wiring in the Home/220 wireing


I have 220 wired for my dryer.I bough a welder which takes 220 but it came without a plug. The wires comeing out are blue,brown, and a ground wire. Does it make any difference which wire goes on my 220 american plug? Those wires are black, white, and a ground wire.

Robert Wilber
Licensed Philadelphia Electrician
Philadelphia License # 3516 - 16765
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Blue and brown are standard European colors, blue being neutral of three phase distribution systems.

Ground is ground. Other than that, one would surmise it shouldn't matter which wire goes where.

That being said, European equipment works on 50 hertz [cycles] rather than 60 hertz [American standard].
Does the welder have electronic controls? Weld cycle times and heat levels might be inaccurate if the controls rely on frequency for timing or other features.

If the welder was intended for US distribution, the manual should provide connection guidance. Otherwise, contact the manufacturer or take your chances.

By the way, my number one rule is "Never guess!" If it isn't standard, find out from the designer.
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Robert Wilber


Licensed Philadelphia electrician serving Delaware, Chester, Montgomery and Philadelphia County in Pennsylvania. I install and repair residential, commercial and industrial wiring and lighting. Troubleshooting and repair of problems that stump other people is my favorite. I am willing to help people figure out why things don`t work. I understand motor controls, transformers and machine wiring. I do not teach basics to novices or do free design work.


Experience in the area I have 44 years experience in residential, commercial and industrial electrical construction and repair, 480 volts and below. This is not to be confused with one week repeated two thousand times.

44 years experience in residential, commercial and industrial electrical construction and repair

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