[RE-wrenches] Cable tray

[David Brearley]

Not at all. Type USE cable was added to the Permitted Uses of Cable Tray, as outlined in Section 392.10(A) and the the companion Table 392.10(A).

On Mar 26, 2013, at 10:02 AM, Glenn Burt wrote:

> Bill,
>  
> Does this mean that USE-2 is not acceptable for use in this manner?
> Also, what is your confidence level that this will make it to the printer? I recall a few other instances of proposed amendments that at the last minute were not included in the past few code cycles (pertaining to PV).
>  
> Too bad we are still on the 2008 code cycle here…
>  
> Thanks
> Glenn Burt
>  
> From: re-wrenches-bounces at lists.re-wrenches.org [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Bill Brooks
> Sent: Monday, March 25, 2013 10:54 PM
> To: 'RE-wrenches'
> Subject: Re: [RE-wrenches] Cable tray
>  
> All,
>  
> Here is the language that has been accepted into the 2014 NEC:
>  
> 690.31(C)(2)
>  
> (2) Cable Trays. PV source circuits and PV output circuits using single-conductor cable listed and labeled as Photovoltaic (PV) wire of all sizes with or without a Cable Tray marking/rating shall be permitted in cable trays installed in outdoor locations provided the cables are supported at intervals not to exceed 30cm (12 in.) and secured at intervals not to exceed 1.4m (4.5’).
>  
> I hope this helps. It is a very big deal.
>  
> Bill.
>  
>  
>  
> From: re-wrenches-bounces at lists.re-wrenches.org [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of David Brearley
> Sent: Monday, March 25, 2013 6:01 PM
> To: RE-wrenches
> Subject: Re: [RE-wrenches] Cable tray
>  
> Ouch. I promise I'm not advocating for anything like that. What I may be missing is the Code reference that says "no cable tray on roofs" or similar. 
>  
> There is so much room for improvement in wire management practices, that being able to use cable tray seems like a step forward. I understand some jurisdictions do not allow it, but it appears as though Code changes were made specifically to address this. It's boring stuff, but you can read the explanation of the Code changes in the ROP and ROC documents. 
>  
> The Code changes a lot with regards to PV system, and Article 690 is more fluid than other articles. Some of this is the Code trying to keep up with technology. In other cases the Code evolves based on new applications for existing products. Often it changes because some areas of the Code are confusing for electricians and inspectors alike. If the new Code language is more clear in its intent than previous versions, some inspectors are willing to let installers build to the most current standard.
>  
> That's all I'm advocating for: Trying to understand how the minimum requirements outlined in Code evolve over time so that you can have a friendly and informed conversation with your AHJ over a donut. 
>  
>  
>  
>  
> On Mar 25, 2013, at 6:26 PM, William Miller wrote:
>  
> 
> David:
> 
> This is great news.  Now, whenever I want to do something that is prohibited by code, I can just say that the Code Making Panel is gonna correct that pesky code section (insert your problem citation here) any day now, so I might as well be allowed to do whatever it was I was fixin' to do anyway.  Unless I am missing something...
> 
> Thanks!
> 
> William Miller
> 
> PS:  Just kidding.  Hope no offense is taken.
> 
> wm
> 
> 
> At 03:46 PM 3/25/2013, you wrote:
> 
> 
> So if you ever get called on 392.10(B)(2), I think you can point out that the Code Making Panels have been busy clarifying that cable tray is okay for source circuit conductors. Unless I'm missing something....
> _______________________________________________
> List sponsored by Home Power magazine
> 
> List Address: RE-wrenches at lists.re-wrenches.org
> 
> Change email address & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
> 
> List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
> 
> List rules & etiquette:
> www.re-wrenches.org/etiquette.htm
> 
> Check out participant bios:
> www.members.re-wrenches.org
> 
>  
> _______________________________________________
> List sponsored by Home Power magazine
> 
> List Address: RE-wrenches at lists.re-wrenches.org
> 
> Change email address & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
> 
> List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
> 
> List rules & etiquette:
> www.re-wrenches.org/etiquette.htm
> 
> Check out participant bios:
> www.members.re-wrenches.org
> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20130326/bae30681/attachment-0003.html>