# Question: Can I Use 12 Gauge Wire On A 15 Amp Breaker?

## Can I use 14 gauge wire on a 20 amp breaker?

NEC 240.4(D)(3) states that 14 AWG must be protected at 15A.

You can not use 14 AWG anywhere on a circuit that has a 20A breaker.

If you are putting 15 amp receptacles on a 20 amp circuit with 12 gauge wire, then you MUST use the screw terminals, not the back stab terminals.

Just use the side terminals..

## What happens when you put a 15 amp receptacle on a 20 amp circuit?

In most home installations, several 15-amp receptacles connect to a 20-amp circuit breaker. This allows multiple devices to connect to a single 20-amp circuit as long as the total circuit load does not exceed 20 amps. If the load exceeds 20 amps for a long duration, the circuit breaker will open the circuit.

## How many outlets can you put on a 14 2 wire?

14–2 wire is allowed for a 15 Amp circuit, and at 120 Volts, 15 Amps x 120 volts = 1800 volt-amperes. So that would allow ten (10) receptacles, you would probably derate that to eight (8) for an 80% safety factor.

## How far can you run 12 gauge wire on a 20 amp circuit?

The total circuit would be about 60 -70 feet in length. It would only be supplying about 5 outlets and one light. It would be a light load, running small things, no heaters or med/large equipment. #12 provides reasonable performance up to about 100′ with general loads like you describe.

## Can I use 12 gauge wire on a 15 amp receptacle?

It is perfectly acceptable to use 12 gauge wire on a 15 amp circuit. … It shouldn’t, many older homes were wired with 12 gauge throughout. Apart from that, it is actually explicitly allowed by code.

## Should I use 12 or 14 gauge wire?

14-gauge wire is the smallest allowed for the permanent wiring of a circuit. It is rated as able to carry up to 15 amps of current. 12-gauge wire is the next size larger and is allowed to carry up to 20 amps.

## What appliances need a dedicated circuit?

What appliances require dedicated circuits?Heat. (plug in heaters, baseboard heaters, electric furnace, heat pump etc.)Air Conditioning.Sump Pump.How Water on Demand. (tankless water heater)Exterior Receptacles.Kitchen Counter Receptacles.Refrigerator.Freezer.More items…

## Can I use a 10 amp fuse instead of 15?

Yes, the 15 Amp fuse may be sized for a device in that particular circuit, and the 10 Amp fuse may be very short lived.

## 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.

## Can you put a freezer and refrigerator on the same circuit?

No. They will inevitably draw enough current starting and running at the same time to trip the breaker and then they will both get warm and the contents will spoil. Check the circuit breaker size supplying the outlet.

## Can a refrigerator and microwave be on the same circuit?

You can’t power a refrigerator and microwave on the same circuit. … According to the 2020 version of the NEC, you can’t power a microwave and refrigerator on the same circuit because each of these appliances requires a dedicated circuit, which is one shared by no other appliances or lights.

## How far can you run a 12 gauge wire?

The following are the maximum lengths of cable you can use while still maintaining a 3 percent voltage drop for the given wire size (AWG) and circuit voltage….For 120-volt circuits:14 AWG50 feet12 AWG60 feet10 AWG64 feet8 AWG76 feet6 AWG94 feetOct 20, 2019

## Can I mix 12 and 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.

## What gauge wire do you use for a 15 amp breaker?

14-gaugeA 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.

## How many outlets can be on a 15 amp breaker?

I’m ask so many times how many outlets and or lights can I put on a 15 amp or 20 amp breaker. Well NEC code does not have it listed that way. By rule of thumb you would stick with 8 to 10 outlets and or lights per breaker. Now this is of course they are 120 volts 60 Hz (USA or Canada).

## What is 14 gauge wire used for?

building wire14 – Wire12 – Wire6 – WireRecommended ForRecommended ForRecommended ForCommon residential wiring: Light fixtures, household receptacles.Common residential wiring: Light fixtures, household receptacles, small appliances.Large household appliances: Central air conditioning, electric furnace.4 more rows

## Can a refrigerator be on a 15 amp circuit?

A refrigerator will use roughly half of the available amperage of a standard 15-amp circuit, and over one-third of a 20-amp circuit.

## Can I change my 15 amp breaker to a 20?

The answer: It’s possible, but not advisable without an electrician evaluating the situation. You should never just upgrade from a 15-amp breaker to a 20-amp one just because the current one is tripping. Otherwise, you may burn your house down via electrical fire.