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No, the National Electrical Code book (US) limits the current on a #12 AWG to 20 amps.

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14y ago
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5mo ago

No, a 30 amp breaker should not be used with number 12 wire. Number 12 wire is typically rated for a 20 amp circuit. Using a 30 amp breaker could lead to overheating and potential fire hazards.

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Q: Can 30 amp breaker be put in number 12 wire?
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Can you put 20amp breaker on 10-2 wire?

No, you should match the breaker size to the wire gauge. A 10-2 wire is typically rated for a 30 amp breaker. Using a 20 amp breaker on 10-2 wire could result in overheating and a potential fire hazard.


How big of a single pole breaker can you put on 12-2 wire?

You can use a 20-amp single pole breaker for 12-2 wire. This is the standard size breaker for 12-gauge wire in residential applications.


Can 10 gauge wire be used on a 20 amp breaker?

No, it is not recommended. A 20 amp breaker should be used with a wire gauge of 12 or smaller to ensure the wire does not overheat and cause a fire hazard. Using a 10 gauge wire on a 20 amp breaker could potentially overload the wire and overheated it.


Can you connect 14 gauge wire to 12 gauge wire on a 20 amp breaker if the 14 gauge is the end of the run and dedicated to lights?

It is not recommended to connect a 14 gauge wire to a 12 gauge wire on a 20 amp breaker, as this can create a safety hazard. It's important to match the wire gauge to the circuit breaker rating to prevent overheating and potential fire hazards. It would be best to run a continuous 12 gauge wire for this circuit.


Can you use 6 gauge wire on A extension cord and put 30 amp plugs on it?

If your question is can you use a #6 flexible SOOW cord and put a 30 amp plug on it, then yes. The breaker that feeds the receptacle that the cord will plug into can be no larger than a 30 amp breaker. What limits the cord capacity to 30 amps is the ratings of the plug on the end of the cord.

Related questions

Can you put 20amp breaker on 10-2 wire?

No, you should match the breaker size to the wire gauge. A 10-2 wire is typically rated for a 30 amp breaker. Using a 20 amp breaker on 10-2 wire could result in overheating and a potential fire hazard.


Has anyone ever tried to experiment with 14 2 on a 20A breaker?

Its a safety thing. 20amps on that thin of wire will heat the wire up too much. Its a fact; not a story. 14 amp wire is not ok to put on a 20 amp rated device!!!! your wire will burn before the breaker will trip and will start a fire!!!!


How big of a single pole breaker can you put on 12-2 wire?

You can use a 20-amp single pole breaker for 12-2 wire. This is the standard size breaker for 12-gauge wire in residential applications.


240v nema6-50r outlet wired with 6 gauge wire and 50 amp breaker you need to run a heater with a nema 6-30p can you simply put a 30 amp receptical in place of the 50 amp receptical?

Not legally because the rating of the 30 amp receptacle would have a 50 amp breaker ahead of it. If you reduced the feed breaker to 30 amps and still use the #6 wire, this would be within the electrical code rules.


Can 10 gauge wire be used on a 20 amp breaker?

No, it is not recommended. A 20 amp breaker should be used with a wire gauge of 12 or smaller to ensure the wire does not overheat and cause a fire hazard. Using a 10 gauge wire on a 20 amp breaker could potentially overload the wire and overheated it.


Can you put a 20 amp breaker at 16 ga wire?

For most apps, the max amps for 16 ga is 25A, so yes.


Can you connect 14 gauge wire to 12 gauge wire on a 20 amp breaker if the 14 gauge is the end of the run and dedicated to lights?

It is not recommended to connect a 14 gauge wire to a 12 gauge wire on a 20 amp breaker, as this can create a safety hazard. It's important to match the wire gauge to the circuit breaker rating to prevent overheating and potential fire hazards. It would be best to run a continuous 12 gauge wire for this circuit.


Can you use 6 gauge wire on A extension cord and put 30 amp plugs on it?

If your question is can you use a #6 flexible SOOW cord and put a 30 amp plug on it, then yes. The breaker that feeds the receptacle that the cord will plug into can be no larger than a 30 amp breaker. What limits the cord capacity to 30 amps is the ratings of the plug on the end of the cord.


New shop 20 amp circuit 32 amp fixture how many fixtures can be put on circuit?

A 32 amp fixture can not be fed from a 20 amp breaker as the breaker will trip every time.


How does circuit breaker or fuse protect the house from fire?

The fuse is matched to the size wire in the circuit the breaker/fuse it is protecting. For instance, a 20 amp breaker/fuse is used in combination with AWG 12/2 wire. A 15 amp breaker/fuse would be used with AWG 14/2 wire. If there is too much current flow in the circuit caused by either overloading the circuit or by a short in the wires the wiring would overheat and catch fire if not for the breaker/fuse. The breaker/fuse is designed to detect this and to trip or blow and shut off all power flowing to that circuit and prevent a fire. This is why you should never install the wrong size fuse. Put a 20 amp fuse on a 15 amp circuit and it would not protect the circuit as it should.


Can you put a 20amp water pump and a 30 amp water heater on a 50amp breaker?

No, it is not safe to put a 20 amp water pump and a 30 amp water heater on a 50 amp breaker. The total amperage exceeds the capacity of the breaker, which can lead to overheating, tripping, or even a fire hazard. It is recommended to have separate dedicated circuits for each appliance to ensure safety and proper functionality.


I have a 15 amp breaker that supplys an outlet. An electrician came out and replaced it with a 30 amp. I asked about the wire size and he said it was ok. I'm not satisfied that it won't cause a fire.?

You should be concerned. It is only legal if the wire that was feeding the load from the 15 amp breaker was a # 10 copper wire. Any wire size smaller is against the electrical code rules. Make sure about the wire size. If he was a licenced electrician or not he should be reported to the local electrical inspector. If he is a certified electrician, and he says it is ok then it is ok. He knows what he is doing and will not do anything to put his certificate in any harm for something that little.