Totally legit. You are allowed to oversize wire anytime you want. Breaker amperage is determined by the smallest wire in your circuit. So if all the other wire is 12 gauge, you may breaker for 20A.

Will 10 gauge wire fit on a 20 amp outlet?

Yes, you can use 10 AWG copper conductors with a 20 ampere breaker. The smallest size conductors you could use with a 20 ampere breaker, are 12 AWG copper conductors. There’s no problem using larger conductors, other than cost to you, and difficulties associated with working with thicker conductors.

Can you junction box 10 3 wire?

The breaker box is at least 150ft from the dryer. It is OK to splice the 10-3 wire to add an additional 1-2 ft to move the 220v outlet.

Where can I use 10 3 wire?

10/3 wire can be used to wire outlets for air conditioning units, electric dryers, and small ovens or stoves. 10/3 wire is designed for wiring 220-volt four-pronged outlets. 10/3 wire is used for appliances requiring up to 30 amps. If your appliance requires more than 30 amps of power, 10/3 will not be sufficient.

What amp do I need for 10 3 wire?

What Type & Gauge of Wire Should I Use?

Type NM-B (Typical Indoor Applications)*
10/3 with ground Apartment size Range – up to 30 amps Built-in Single Ovens – up to 30 amps Electric Dryer – up to 30 amps
10/2 with ground Electric Wall Heater – up to 30 amps
8/3 with ground Double Oven Range – up to 45 amps

Is it OK to splice 10 gauge wire?

Yes, you can (and should) splice the wires in a J-Box, routing a separate pigtail to each outlet. Be sure to use appropriately sized wire nuts and a box large enough for the operation…and the 10 gage wire which does not like to be bent in tiny spaces.

What size wire do I need for a 110 outlet?

To wire a 110 volt/120 volt outlet, you need 3 wires, green or bare copper is the ground, white is neutral, and usually black or red is the hot (live) wire (in this case my Hot is the purple wire). In the home, you will usually use Romex wire that you can get at the hardware store.

Can I use 10 3 wire for a subpanel?

Woo-hoo! As @Philip points out, you can use any size subpanel you like. Get one that’s bigger than the minimum, so you have plenty of room to work inside. You can choose either a “main lug” panel, which does not include its own main breaker, or a “main breaker” panel.

How many amps is 10 Romex good for?


Wire Size Amps Wire Type
6 Gauge 55 Amps Feeder and large appliance wire
8 Gauge 40 Amps Feeder and large appliance wire
10 Gauge 30 Amps Dryers, appliances, and air conditioning
12 Gauge 20 Amps Appliance, laundry, and bathroom circuits

How far can you run 10 wire?

How Far Can You Run 10 Gauge Wire? You can run a 10 gauge wire up to 85 feet on a 20 amp circuit. If you opt to use this type of wire on a 15 amp circuit, it can run up to 115 feet. After these distances, the circuit will go over the recommended 3% voltage drop.

How far can you run 10 gauge wire on a 30 amp breaker?

10-gauge wire can accommodate a 30-amp breaker until you reach 150 feet. At 150 feet or more, you should get 8AWG or 6AWG wire.

How far can you run a 120v circuit?

As an example, for a 120-volt circuit, you can run up to 50 feet of 14 AWG cable without exceeding 3 percent voltage drop.