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IAEI Magazine | Author: Bob LaRocca
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Bob LaRocca

Bob LaRocca is the principal engineer (PDE) for Special Protection Devices for Underwriters Laboratories Inc. and has more than 35 years of experience in product safety testing of products and components of all types. Bob is a registered professional engineer (PE) in the state of New York; a certified product safety manager, a member of NEC Code-Making Panel 2; a charter member of the IEEE Product Safety Society; and is a member of IAEI.


Backfeeding Ground-Fault Circuit Breakers

The wording of the exception may introduce confusion as it states that the ground-fault protection device "shall be identified…for backfeeding,” which implies a specific marking on a circuit breaker equipped with GFPE. In actuality it is the absence of "line” and "load” markings on a circuit breaker that indicates that it is suitable for backfeeding.