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If you're running a 40 amp circuit you must use 8AWG wire. If you attempt to use anything smaller you run a significant risk of burning your house down.

If you are unfamiliar with wiring regulations and practices, contact a qualified electrician to wire the circuit for you.

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No, it is not safe to use a 40-amp breaker on a 220V welder with 12-3 wire. The wire size should match the breaker size to prevent overheating and potential fire hazards. In this case, a 30-amp breaker should be used with 12-3 wire for a 220V welder.

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9mo ago
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Q: Can you use a 40amp breaker on your 220v welder with 12-3 wire?
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Can 110V circuit with 2 wire size of 10 and a ground be converted to 220V after changing the outlet and breaker?

No, changing the outlet and breaker does not change the voltage of the circuit. To convert a 110V circuit to 220V, you would need to rewire it with proper gauge wire rated for 220V and install a compatible 220V outlet and breaker. It is important to consult with a licensed electrician for this type of conversion to ensure safety and compliance with electrical codes.


How do you install a 3-wire 220v welder outlet directly beneath a 125 amp subpanel in your garage 300 amp service to house 4 15A and 3 20A circuits currently in subpanel?

To install a 3-wire 220V welder outlet beneath the subpanel, you will need to run a dedicated 3-wire cable from the subpanel to the outlet location. Connect the red and black wires to the hot terminals, and the white wire to the neutral terminal on the outlet. Make sure to install an appropriate breaker in the subpanel to match the outlet's voltage and amperage requirements. Also, ensure that the wiring and breaker sizes are suitable for the 220V outlet and the welder's power demands.


What size wire and circuit breaker is needed for an electric oven 4 wires with rated load of 34.9 amps 220v that is about 100 foot run from the electrical panel?

That would be a 40 amp 220v circuit. Circuit breaker is 40 amps and wire is 8 awg. Should use solid copper wire. Follow oven installation instructions.


Can you run 8 gauge wire on a 50 amp breaker?

No, you should not run 8 gauge wire on a 50 amp breaker. The wire size should be compatible with the amperage rating of the breaker to ensure safety and prevent overheating. For a 50 amp breaker, you should use a minimum of 6 gauge wire.


What size wire for a welding extension cord 220v 50 amps?

For a 220V 50A welder, you would need a minimum of 6-gauge wire for your extension cord to ensure it can handle the current safely. It's recommended to use a heavy-duty, outdoor-rated extension cord with appropriate wire gauge and length to avoid voltage drop and overheating.