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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Can you connect 2 different gauge wires together?

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 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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Can you hook 12 gauge wire to 14 gauge wire?

Anyway, the first subject is a bit touchy because it makes it difficult to perform an inspection when all of the wires coming into the panel are 12 but many of the circuits have 14 in them too. There is nothing against code mixing wire size for these circuits as long as the OCPD matches the smallest wire.
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Can I connect a bigger wire to a smaller wire?

Wire size is usually based upon the current load each is expected to use. As long as you do not draw too much current through the smaller wires you are usually OK. If your connections are signal…
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Can I Connect Different Sized Wires?



Can you mix 12 and 10 gauge wire?

You haven't said how you will manage the transition from 10 gauge to 12 gauge. If you are thinking of wire nuts in a junction box, then the answer is that you cannot do this safely. The 20A breaker's job is to protect the load wire connected to it. A 12 gauge wire needs a 20A breaker to protect it.
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What happens if you use 12 gauge wire on a 15 amp circuit?

Because it has even less chance of overheating, 12-gauge wire is also acceptable on a 15-amp circuit.
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Can I use 12 gauge wire on a 15 amp receptacle?

With 12 gauge, you need to use the screw terminals. You can use 15 amp outlets on either 15 or 20 amp circuits. 12 gauge wire is the minimum for 20 amp circuits. 14 gauge wire is the minimum for 15 amp circuits.
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Can I use 12 gauge wire for lights?

Yes, it is okay to use 12-2 cable to supply lighting fixtures. The other answer indicates that it even with 12-2 you have to use a 15A breaker for lighting circuits which is not strictly correct. If the entire circuit is 12AWG (other than fixture wires), then a 20A breaker may be used.
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Can I double up 14 gauge wire?

Doubling is allowed for much larger sizes. The #14 AWG Romex is not useless, keep it for any circuit that will be protected with 15A fuse. An exception is where the voltage drop is more than 5% ( extra long runs with high load), or exposed to high temperature.
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Can I connect 18 gauge wire to 16 gauge wire?

Yes the 16-gauge will work just fine. Make sure your connections are well insulated.
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Can you connect 8 gauge wire 10 gauge?

Yes, if it's approved for the line voltage and temperature and if connectors (e.g. wire nuts) are sized to fit. A lower gauge number means heavier wire, able to carry more current safely, with lower voltage drop for the same length, so it should be quite safe if fused correctly for 10-gauge.
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Can you double up wire?

Yes that is an acceptable solution electrically, but 5 separate conductors will weigh more than one single larger conductor of the same total amp rating. It is the same amount of copper, but a lot more insulation.
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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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How far can you run 12 gauge wire on a 15 amp breaker?

You can run a 12 gauge wire up to 70 feet on a 15 amp circuit.
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Is it okay to put a 15 amp outlet on a 20 amp circuit?

The use of multiple 15 amp receptacles on a 20 amp circuit is permitted. A duplex receptacle is considered as multiple receptacles and is therefore permissible to use as the single, or one of several, multiple type receptacles on the circuit.
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Can you use 12-gauge wire on a 20 amp circuit?

Amperage and Wire Gauge

Building codes based on the National Electrical Code prohibit the use of 14-gauge wire anywhere on a 20-amp circuit. All wiring in such circuits must be 12-gauge or larger. The code also prohibits installation of a 20-amp Ground-Fault Interrupter receptacle on a 15-amp circuit.
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How many amps can 12-gauge wire carry?

“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 I mix 14 and 10 gauge wire?

You should not mix gauges of wires in the same circuit.
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Can I use 10 gauge wire with a 15 amp breaker?

Only for 15 Amp items, 14 or 888-282-0465 888-282-0465 888-282-0465, or smaller for 20 Amp ones. The #10 wire wouldn't fit into a back wired receptacle and wouldn't work with screw terminals or devices with wired connections.
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