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Thursday, February 22, 2018
Question:
Good Morning, How do we enforce 210.12(A)(4)d. I’ve called device manufacturers and they say UL hasn’t established a test for “system combination type AFCI? They imply it up to the inspector to accept or deny.
Thank you, Ed Sim
A
Answer:
Hey Ed thanks for your question. I believe you are correct that system combination type AFCI's are not available. If that is the case then that option cannot be used and one of the other methods in 210.12(A) must be used. Sometimes rules are included in the NEC for products that are not yet available but that allows manufacturers to develop them if they think there is a market.