Have you looked at 

https://www.snaketray.com/product-catalog/solar-snake-tray/ 
<https://www.snaketray.com/product-catalog/solar-snake-tray/>

jay

> On Feb 5, 2023, at 1:48 PM, Kirk Herander via RE-wrenches 
> <re-wrenches@lists.re-wrenches.org> wrote:
> 
> All,
> I'm just starting a 500kwh LFP battery system that requires a max. distance 
> of 40' from each battery cabinet to the DC combiner.
> 
> I am considering using a cable tray instead of an enclosed wireway for this. 
> The battery cable used is ALL-Flex CT multi-rated MTW / THHW, and will be 
> greater than or equal to 1/0, per NEC 392.
> I haven't read up  a lot yet on it but I assume cable tray allows single 
> conductor ampacity to be sized as in free air per 310.17, with perhaps some 
> caveats.
> 
> Have any of you used cable tray in a similar fashion? Pointers? Thanks.
> 
> -- 
> Kirk Herander /  <>kirkh@vermont.solar <mailto:kirkh@vermont.solar>
> Owner|Principal, VT Solar, LLC
> Celebrating our 32st Anniversary 1991-2023!!
> dba Vermont Solar Engineering
> 802.863.1202
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