Energize
Senior Member
- Location
- Milky Way Galaxy
I recently received, via e-mail, the EC&M code question.
http://ecmweb.com/nec/code_qa/code_qa_041708/
Someone asked if backfed breakers had to be secured to the panel.
Mike answered yes, they are required, per section 408.36 (D)
What Mike did not mention was that is not a requirement for photovoltaic power source per section 690.64 (B) (5). These backfed breakers do have be identified, and they are other requirements, but the point is there is at least one instance where the clamp requirement is not required. Perhaps there are others I am not aware of, but I am surprised there was no mention of this in Mike's answer.
Mike's answer implied ALL backfed breakers required clamping. While I might think that is a good idea, I have read enough threads here that hammer on guys who "think" and read many, many times "you might think it a good idea, but that is not what the code says."
Perhaps I should make a submittal for 2011 code change to add an exception in 408.36 (D) that references 690.64 (B) (5).
Then again, maybe I am wrong. I am referencing 2005 NEC and Mike's answers are based on 2008 NEC (I think). Perhaps 2008 is different in these two sections. I do not have a 2008 code book for research.
Does it change in the '08?
http://ecmweb.com/nec/code_qa/code_qa_041708/
Someone asked if backfed breakers had to be secured to the panel.
Mike answered yes, they are required, per section 408.36 (D)
What Mike did not mention was that is not a requirement for photovoltaic power source per section 690.64 (B) (5). These backfed breakers do have be identified, and they are other requirements, but the point is there is at least one instance where the clamp requirement is not required. Perhaps there are others I am not aware of, but I am surprised there was no mention of this in Mike's answer.
Mike's answer implied ALL backfed breakers required clamping. While I might think that is a good idea, I have read enough threads here that hammer on guys who "think" and read many, many times "you might think it a good idea, but that is not what the code says."
Perhaps I should make a submittal for 2011 code change to add an exception in 408.36 (D) that references 690.64 (B) (5).
Then again, maybe I am wrong. I am referencing 2005 NEC and Mike's answers are based on 2008 NEC (I think). Perhaps 2008 is different in these two sections. I do not have a 2008 code book for research.
Does it change in the '08?