Nice Wire Gauge For 20 Amp Circuit
Enter the total amperage on the circuit.
Wire gauge for 20 amp circuit. Underground wire for a residential circuit usually is installed with underground feeder uf. This allows multiple devices to connect to a single 20 amp circuit as long as the total circuit load does not exceed 20 amps. 1 440 volts for 15 amp circuits.
The wire size chart below shows allowable ampacities of insulated conductors rated up to. Household receptacles are connected using 12 gauge wire. It is important to pick the correct size of wire so that the wire doesn t overheat.
Sizing the conductors. The solution is simple. The wire has a rating that allows it to carry up to 20 amps.
For a long run though you should use the next larger size wire to avoid voltage drops. Number of phases in circuit. This condition is assumed in many voltage drop calculations and tables.
Keep the total load on the circuit to 80 percent or less of total capacity. A sample of 120 volts single phase copper wire 144 feet one half of a 288 foot circuit with 10 amps load on it yields a number 10 awg wire size. Here s a quick table for normal situations.
Select the type conductor wire material the circuit voltage and the phase of the circuit. In most home installations several 15 amp receptacles connect to a 20 amp circuit breaker. The code also prohibits.