Browse FAQs

CAFI combination arc-fault circuit breaker trips when any load is turned on. What is the problem?

Published date: 30 September 2019

Issue:
The HOM120CAFI breaker trips as soon as any load is turned on; it doesn't matter if it is a light or fan or plug in a vacuum cleaner--any load trips the breaker.

Product Line:
Circuit breaker miniature mccb, arc fault afi cafi

Resolution:
The most probable causes for this issue are breaker mis-wiring and a grounded neutral. First ensure that the breaker is wired correctly; hot wire to the line terminal, load neutral wire to the load neutral terminal on the breaker, and the white pigtail to the neutral bar. If wiring is correct, check for a grounded neutral. Recommend turning breaker OFF, removing load neutral wire and reading resistance to ground. It should be 1 megohm or more; readings close to zero indicate a grounded neutral which must be cleared before the breaker will hold a load.

Was this helpful?

What can we do to improve the information ?

Can't find what you are looking for?

Reach out to our customer care team to receive information on technical support, assistance for complaints and more.