[RE-wrenches] Cable tray

[David Brearley]

Uses permitted. 392.10(B)(1) requires that single conductor cable in cable tray be size 1/0 or larger.

Here's the deal, though. NEC 2014 will add "Service Entrance Cable: Types SE and USE" to Table 392.10(A). It is not in that table now, which is why inspectors turn to 392.10(B). That means that under 390.10(A) in NEC 2014, Type USE conductor can be used in cable tray according to the methods outlined in Article 338. And references in 690.31 make it clear—if it isn't already— that PV Wire and USE-2 can generally be used interchangeably in PV systems, and that cable tray is accepted for source circuit conductors. 

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....


In Mar 25, 2013, at 5:17 PM, Chris Mason wrote:

> What part of 392 would be a problem?
> 
> On Mon, Mar 25, 2013 at 6:12 PM, Glenn Burt <glenn.burt at glbcc.com> wrote:
> I think you will find it difficult to adhere to Article 392 and use a cable tray on a rooftop with source circuit conductors, if that is your hope.
> 
>  
> 
> -Glenn
> 
>  
> 
> From: re-wrenches-bounces at lists.re-wrenches.org [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Chris Mason
> Sent: Friday, March 22, 2013 3:08 PM
> To: RE-wrenches
> Subject: [RE-wrenches] Cable tray
> 
>  
> 
> I'm looking for flat roof cable tray system that is cost effective. We previously used Cablofil and Cablo-port FSL 12" tray but it is very expensive for our current application due to the size of the roof. We need to install about 200' of tray and Cablofil galvanized is eating up the budget. Can anyone recommend a cheaper alternative. 
> 
>  
> 
> -- 
> Chris Mason
> 
>  
> 
> 
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> Chris Mason
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