ampacity

noun
am·​pac·​i·​ty | \ ˌam-ˈpa-sə-tē How to pronounce ampacity (audio) \
plural ampacities

Definition of ampacity

: 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

First Known Use of ampacity

1953, in the meaning defined above

History and Etymology for ampacity

blend of amp, abbreviation for amperage, and capacity entry 1

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The first known use of ampacity was in 1953

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Cite this Entry

“Ampacity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ampacity. Accessed 3 Dec. 2020.

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