Can I use 12 gauge wire on a 15 amp breaker?

Because it has even less chance of overheating, 12-gauge wire is also acceptable on a 15-amp circuit.
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What wire do you use for a 15 amp breaker?

A 15-amp circuit is usually served by 14-gauge wire and is protected by a 15-amp circuit breaker or fuse. A 20-amp circuit, protected by a 20-amp breaker or fuse, must be served by 12-gauge or 10-gauge wire.
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How far can you run 12 2 wire on a 15 amp breaker?

You can run a 12 gauge wire up to 70 feet on a 15 amp circuit. That number drops to 50 feet if you run 12 gauge wire on a 20 amp circuit.
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Can you mix 12g and 14g wire?

There is nothing against code mixing wire size for these circuits as long as the OCPD matches the smallest wire. We ask them to mark the wires with tags in the panel so that in the future and for final inspection, we know what is what.
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What size breaker do I need for 12 gauge wire?

A 12-gauge wire is required for an outlet circuit that is regulated by a 20-amp breaker while in a case where an overloading light circuit is not required a 15-amp breaker and 14-gauge wire is necessary.
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Can You Use 12 Gauge Wire On A 15 Amp Circuit?



How many amps can you run on 12 gauge wire?

“Twelve-gauge wire is good for 20 amps, 10-gauge wire is good for 30 amps, 8-gauge is good for 40 amps, and 6-gauge is good for 55 amps,” and “The circuit breaker or fuse is always sized to protect the conductor [wire].”
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Can you connect 12 gauge wire to 16 gauge wire?

Strip the 12 gauge wire extra long so it goes all the way through the butt connector with the tip extending just a bit out of the metal barrel. Then insert your 16 gauge wire into the other end so it's side-by-side with the 12. That'll give you the build you need for a good crimp.
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When should I use 12 gauge vs 14 gauge?

12-gauge wire is the minimum requirement for outlets on a 20-amp circuit. 12-gauge wire can be used for outlets on both 15 and 20-amp circuits. 14-gauge wire is unsafe to use for outlets on a 20-amp circuit. 14-gauge wire can only be used for outlets on a 15-amp circuit.
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Which is better 12 gauge or 14 gauge?

The first thing to understand is the gauge system. Gauge is the measurement used to measure the thickness of steel. In the gauge system the higher the number the thinner the steel. As an example, 12 gauge steel is thicker and stronger than 14 gauge steel.
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Can I use 12 2 wire with a 15amp outlet?

or running a new run back to the panel and putting in a 15 amp breaker will this wire work. Yes.
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What cable do I need to run power to my shed?

One of the most frequently asked questions is what outdoor electrical cable do I need to power my shed? The answer is armoured cable.
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Is 12 2 wire good for outlets and lights?

Yes, it is okay to use 12-2 cable to supply lighting fixtures.
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What gauge wire can carry 15 amps?

To safely use a maximum current of 15 amps, you will need a wire gauge of 14. A 12 gauge wire is a safer bet, but a 14 gauge wire will work just fine.
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What happens if you put a 20 amp outlet on a 15 amp circuit?

As I understand it, the reason that a 20 amp outlet can't be connected to a 15 amp circuit is that someone could potentially connect a 20 amp device, overload the circuit, and cause a fire.
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What happens if you use 14 gauge wire on a 20 amp circuit?

I would say 14 gauge wire anywhere on a 20 amp circuit is not OK. The purpose of the breaker is to cut off power before the wiring overheats. If you plug in several devices on an outlet that total 20 amps, you will exceed the safe working capacity of the 14 gauge wire without tripping the breaker.
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What gauge is most house wiring?

Wire Gauge

The most common sizes you'll find in residential work are 14-gauge and 12-gauge. Larger appliances such as electric stoves, electric water heaters, electric dryers and central air units will often use 10-, 8- or even 6-gauge wire.
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How many outlets can be on a 15 amp breaker?

Technically, you can have as many outlets on a 15 amp circuit breaker as you want. However, a good rule of thumb is 1 outlet per 1.5 amps, up to 80% of the capacity of the circuit breaker. Therefore, we would suggest a maximum of 8 outlets for a 15 amp circuit.
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What wire do you use for garage outlets?

Garage outlets are often wired with #12 so that you're able to use 20A breakers, which are more suitable for heavier power equipment. If you carry through with #14, you'll be limited to a 15A breaker.
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Can you change Wire Gauge?

You can always use a larger gauge than is required

whatever, as long as your wiring methods are proper. There's one hitch, but it's a "practical, implementation" issue moreso than a rule. That's attaching the wire to the device, receptacle, switch, whatever, or making the larger wire fit somewhere.
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Can I mix 12 and 18 gauge wire?

NO don't ever mix AWG Wire gauges they are different for a reason and the main reason is amperage. Sure it will work but it's 100% wrong and the #18 gauge wire becomes a fusable link and potential fire hazard. It would be easier to use the #18 wire to pull #12 wire and make it right.
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Is it OK to connect different gauge wires?

It must be noted that while it is possible to splice different types of Romex wire—12/2 to 12/3, for instance—you should never splice together wires of a different gauge. Wire gauge is determined by the amount of amperage the wire is expected to carry.
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Can I put a 20 amp breaker on 12 gauge wire?

Yes, all conductors protected by a 20 ampere circuit breaker must be at least 12 AWG copper.
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Can 12 gauge handle 20 amps?

The next size larger is 12-gauge wire, which can carry up to 20 Amps. The wire size that has been chosen affects the Amp rating of a circuit breaker. A 20-amp breaker is not allowed to run circuits with 14-gauge wires.
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Can you put a 30 amp breaker on 12 gauge wire?

You should not use a 30-amp circuit breaker on a 12-gauge wire. The circuit breaker installed on a circuit is of a specific size to protect a certain wire gauge. A larger breaker on a thinner wire will allow more current over the wire before tripping.
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