noun am·pac·i·ty \ˌam-ˈpa-sə-tē\

Definition of ampacity



  1. :  the maximum amount of current that a wire or cable can safely carry <The longer the brush, the longer the life; therefore, when a brush is operating at 40 to 50 percent below the maximum current capacity (ampacity) per inch and has an extra long length, the motor can have a very long life. — A. N. Tsergas>

Origin and Etymology of ampacity

blend of amp, abbreviation for amperage, and capacity

First Known Use: 1965

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