How to Wire a 220 Outlet for a Welder in Easy Step-by-Step Tutorial

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If you’re a gearhead, it is possible that sometimes you need to combine two metal pieces into one. Since nowadays welding equipment is no longer expensive and widely available for enthusiasts with different skill and experience levels, why not try it?

However, electricity does possess some danger and electrical panel contain enough power supply to spark big amount of light and fire.

How to Wire a 220 Outlet for a Welder

That being said, here is the guide on how to wire a 220 outlet for a welder safely.

How to Wire a 220 Outlet for a Welder

For someone who’s able to master the process below, they can save much money instead of hiring an electrician. Here is the detailed step by step process that easy to follow:

  1. Make sure you have turned off the breaker’s box main power before even touching anything.
  2. Open metal cover of the breakers to gain access to it. You have to identify the box’s make and model. Then, see if there are two-pole breakers in the box.
  3. On the breaker section, connect each screw inside the breaker with hot wire. Proceed by putting the breaker into the box. Make sure there is no longer any power supply that runs through the box.
  4. Do double check on the connections. See if the wires have been routed properly and anything else is installed thoroughly. One you are done checking, connect the outlet on the stake at the wall, then set its cover.
  5. Set the outlet box cover again then turn on the master breaker. Plug the welder in and check its power. Now you are done with the welding job.

How to Wire a 220V Plug with 3 Wires

The cord of old dryers sometimes only has three prongs. Read how to wire a 220 outlet for a welder that has three wires in the following:

  1. Prepare three 10 AWG wired to wire your dryer outlet. The black and red wires are meant to be connected to two-gang circuit breaker inside panel. The third wire, which may be bare, white, or green colored, is supposed to be connected to the ground bus inside panel.
  1. On the receptacle, search for two brass screws. Then hook the black and red wires to those screws – there is no rule about which color goes to which screw. The third wire, however, must be connected to the third terminal screw.
  1. Try to wrap the wires by circling them to terminal screws, as it is difficult enough to bend 10-gauge wire. Curl the ring lug onto the edge of each wire.
  1. Simply release the screw when you’re going to attach wire to the terminal. Make it passes over the plug on the wire. Once it goes on to the terminal, tighten down the screw. This method allows you to create more secure connection with less effort.

What Size Breaker Do I Need for a 220V Welder

After you know how to wire a 220 outlet for a welder, it is time to find suitable breaker size. Bigger welder requires bigger breaker size as well.

For smaller 115V welder, you might only need 20-50 amp breaker. Meanwhile, for 220V welders, it is necessary to go with minimum 30-40 amp breaker.