What size wire for 100 amp service?

What size wire for 100 amp service?

A 100 A sub-panel requires a two-pole 100 A breaker – 3-3-3-5 copper SER cable – (#3 AWG wire for the hot wires and a #5 AWG for the ground). For a subpanel, you need four wire service (two hots, a neutral, and an equipment ground)

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