what size wire fits a 100 amp breaker

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  • What size wire do I need for a 150 amp service breaker?

  • For 150 amp, the right wire size is 3/0. For 200 amp, you will want a wire size 250 kcmil. What size wire do you use for 100 amp service breaker?

  • What wire do I use for a 100 amp sub panel?

  • Similarly, what wire do I use for a 100 amp sub panel? A 100 A sub-panel requires a two-pole 100 A breaker-if you want 100 A. You can use #4 AWG 75 deg C or 90 Deg C copper wire in conduit for a 100 A breaker provided the breaker is labeled for use with 75 deg C wire.

  • What size wire do I need for 100 amps?

  • First, check the wire gauge chart here. You have all the AWG copper wires and their ampacities listed (at median 75C or 167C temperature). From that chart, you can see that we have 4 wire sizes with amps in vicinity of 100 amps. These are: Now, it seems that a #3 AWG wire with 100 ampacity is the perfect 100 amp wire size.

  • How many wires do I need for a 2 gauge wire?

  • The cable must contain one or two hot wires depending on your needs, one neutral wire, and one ground wire. Each wire should be 2-gauge in size. Read remaining answer here.

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