30 amp wire guage | Solar panel wholesaler

30 amp wire guage

Best answer


The rule of thumb that techs will usually go by is that for a 30 amp circuit breaker,10-gaugewire is the right size to go with. For a 40 amp you need a 8-gauge wire size and for a 20 amp,you will need a 12-gauge wire size.

People also ask


  • What gauge wire should I use for 30 amps?

  • For 30 amps, the 12 gauge wire (with 35 amp rated ampacity) is a better choice. For the 20 amp circuit, on the other hand, the 12 gauge wire would be an optimal choice. 10 gauge wire is rather cheap per foot. iGreely, for example, offers 8 gauge wires for $1 to $5 per foot (longer 10 gauge wires are cheaper per foot):

  • What is the ampacity of a 00 gauge wire?

  • The ampacity at 75C is 175 amps, and the 00 AWG wire is custom used as a 150 amp wire size (despite the 1/0 gauge wire having 150 amp ampacity at the same temperature). In the cable itself, the 00 gauge wire has 2.74 turns per inch.

  • What is the size of a 1 gauge wire?

  • 1 gauge wire is the first 鈥榥on-negative or 0鈥?wire gauge. 1 gauge wire diameter is 7.348 mm and it has a 42.4 mm2 (1 AWG to mm2) cross-section or area. Given the 42.4 mm2 thickness, the 1 AWG copper wire has a current-carrying ampacity of 130 amps at 75C.

  • What is the diameter of a 20 gauge wire?

  • The diameter of a 20 gauge electric wire is 0.812 mm. It has a 0.518 mm2 cross-section. How many amps can a 2o gauge wire handle?

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