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Electrical Wire and Cable

Electrical Circuit for a Welder

By Dave Rongey - Summary:

I need to set up a plug in workshop for my portable welder. What type of line and plug should I use for a 110v/220v-30amp-120amp welder.

Planning Your Welder Circuit

Question: I need to set up a plug in workshop for my portable welder. What type of line and plug should I use for a 110v/220v-30amp-120amp welder.

This electrical question came from: Pat, a Handyman from Toledo, Ohio.
See more about Home Wiring for Ohio

Additional Comments: If I make this operation safe its worth it.

Dave’s Reply:
Thanks for your electrical question Pat.

Electrical Circuit for a Welder

Pat, the required electrical circuit will be specific to the exact welder you purchase. From the information you have provided, the input electrical circuit will be 30 amp rated and may be wired for 240 volts . I see that many of these welders may operate at 120 or 240 volts. If you choose a welder that has dual voltage then the actual cord outlet and plug type or style will depend on the voltage that you choose for the welder. A 30 amp circuit is generally wired with #10 gauge copper wire, but again, the actual circuit should be sized by the owners manual of the exact welder that you purchase, and then which voltage options you may choose.

Electrical Tip for Welder Circuits

Do not install an electrical circuit until you have purchased the welder. Understand what the exact circuit requirements will be and then plan the installation of the electrical circuit for your welder.

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