Can I use 12 gauge wire on a 30 amp circuit?
12 gauge wire is rated for a maximum of 20 amps.
You need a minimum of 10AWG wire for 30 amps..
What kind of wire do I need for a 30 amp breaker?
Why Wire Gauge Is ImportantWire UseRated AmpacityWire GaugeElectric clothes dryers, 240-volt window air conditioners, electric water heaters30 amps10-gaugeCooktops and ranges40-50 amps6-gaugeElectric furnaces, large electric heaters60 amps4-gauge5 more rows•Sep 17, 2020
Can you use a 25 amp breaker with 12 gauge wire?
A 12 gauge wire is rated for 25 amps. NEC only allows for it to be protected at a max of 20 amps (unless following an exception for motor loads). … A 30-amp breaker does not operate safely with a 12-gauge wire. The minimum wire size that is allowable for use with a 30-amp breaker is 10 gauge.
What size wire do I need for a 30 amp 220v circuit?
If the appliance draws 30 amps, you need a different type of receptacle, and the cable needs to be 10-gauge. At the store, the cable will be labeled 10 AWG. Continuing the progression, you need eight AWG cable for a 40-amp circuit and six AWG cable for a 50-amp circuit.