For 60-amp electrical service, 6-gauge copper or aluminum wire is the correct size to power such devices as electric furnaces and large electric heaters. A 50-amp circuit breaker or fuse box can also be powered by 6-gaug... More »

A 50-amp breaker uses four wires, two of which are hot feeds of 120 volts. This results in 50 amps at 120 volts for each leg. More »

Depending on distance, and a few other factors, the wire size for a 30amp load would be #10 AWG. Over long distances the conductor size would be increased to account for any voltage drop. More »

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National Electric Code 310-315 specifies electrical services wire conductor sizes of #2/0 for copper and #4/0 for aluminum for use in 120/240 volt 3-wire, single-phase dwelling services and feeders. NEC requires a minimu... More »

According to Houston Wire & Cable Company, National Electric Code Tables 310.15 B6 and 310.16 specify that 2/0 gauge copper wire can be used for service or feeder connections to a 200-amp panel. The source lists 4/0 gaug... More »

www.reference.com Home & Garden Home Maintenance Electrical

Cerro Wire, a manufacturer of copper electrical building wire, provides a wire size and amp ratings chart on its website. On the chart, Cerro identifies the maximum amp load for both copper and aluminum wire of varying w... More »

www.reference.com Home & Garden Home Maintenance Electrical

Either 2/0 gauge copper wire or 4/0 gauge aluminum wire can deliver 200-amp electrical service. Three conductor wire supplies 240 volts of electricity to a main service panel, routing through a main breaker rated for 200... More »