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ground-fault interrupter

American  

noun

  1. a circuit breaker that senses currents caused by ground faults and quickly shuts off power before damage can occur to generating equipment.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.