[RFI] Solar Panel Manufacture Schedules Fix For Solar Panel RFI

[nm8rmedic]

Tnx for the reference.  That led to a search and it's always interesting to study the NEC.  Some smart folks are behind it.
Aside from damage due to overfill, is the fill limit meant to insure no temp derating is needed?  I wonder if one would have to employ large diameter conduit that would make the act cost prohibitive.
Wrong forum to discuss at length but a question - is NM covered with blown in insulation required to be derated for ampacity?  Off list reply ok.
Tnx




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-------- Original message --------From: dwkanepe at aol.com Date: 5/17/18  2:59 PM  (GMT-05:00) To: nm8rmedic at rocketmail.com, jim at audiosystemsgroup.com, rfi at contesting.com Subject: Re: [RFI] Solar Panel Manufacture Schedules Fix For Solar Panel RFI 


The NEC does not prohibit type NM from being installed in conduit (as long as conduit fill limits are not exceeded) and, in fact, requires it (or other protective means) in 334.15(B) for certain installation conditions


Don Kane
WB2BEZ




In a message dated 5/17/2018 1:57:48 PM Eastern Standard Time, rfi at contesting.com writes:



 I believe the issue is conductor heating. Sheathed cable has to be in open-air to maintain its rating.  Conduit that encloses it impacts air flow.   Someone advise if my understanding is incorrect.   I do not fully understand the electrical code. I am not licensed to expound on the electrical code. The only person I've ever encountered that would be even close, would be Mike Holt...  Scott NM8R Sent via the Samsung Galaxy S8+, an AT&T 4G LTE smartphone -------- Original message --------From: Jim Brown <jim at audiosystemsgroup.com> Date: 5/17/18 12:55 PM (GMT-05:00) To: rfi at contesting.com Subject: Re: [RFI] Solar Panel Manufacture Schedules Fix For Solar Panel RFI On 5/17/2018 9:20 AM, Alan NV8A wrote: > Correct me if I am misremembering, but isn't running Romex in conduit > a Code violation? I don't know. I've never thought about doing that. It would be much harder to pull than individual conductors and it would be a waste of conduit fill capacity. > Running twisted separate conductors in conduit would not be. Right. And if it's steel conduit, twisting is not important. 73, Jim K9YC _______________________________________________ RFI mailing list RFI at contesting.com http://lists.contesting.com/mailman/listinfo/rfi _______________________________________________ RFI mailing list RFI at contesting.com http://lists.contesting.com/mailman/listinfo/rfi