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nec amperage table

People also ask


  • How many amps does a 9-gauge amplifier support?

  • If you have a 9-gauge, it can support a maximum of 19 amperes. It is ideal to use this for a 4-channel amplifier to speaker installation. A 10-gauge can support a maximum of 15 amps. This is useful for household appliances, meters, motor, electric heating appliances, and lamps.

  • What is the maximum ampere rating for 12 gauge aluminum?

  • * The load current rating and the overcurrent protection for conductor Types shall not exceed 15 amperes for 14 AWG, 20 amperes for 12 AWG, and 30 amperes for 10 AWG aluminum and copper-clad aluminum after any correction factors for ambient temperature and number of conductors have been applied.

  • Why is the nominal system voltage above the nameplate voltage?

  • Typically, the nominal system voltage for a motor will be above the nameplate voltage to compensate for any voltage drop in the circuit. For more details into sizing wire and circuit protection devices for motors, view the Motor Wire Size and Circuit Protection Chart and the Motor Wire Size Calculator.

  • How many amps can a 0 gauge cable handle?

  • For the 0 (1/0) gauge, the maximum amperes it can handle is 150 amps, which means it can handle any amount of amps as long as it is below its maximum capacity. Typically, you can use it as a cable for your car audio.

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