What is the wire size for 200 amps?

By Forinfos - 23/03/2025 - 0 comments

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 amps.

Two conductors of the three-wire bundle provide two legs of hot current, each at 120 volts. The third conductor of the three-wire bundle ties to the neutral bus bar of the main service panel. For a main panel, the neutral bus bar and grounding bar join with a bonding strap. A 4-gauge bare copper wire grounds the neutral bus bar to a nearby grounding rod.

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