[RE-wrenches] Megawatt System - Combiner Output Wiring

[Solar]

The Last large system I worked on we used direct burial alum 750s. We had a large crew out that day to help with that wire pull, it was 1000'. Eventually the backhoe that dug the trench was used to help pull the wires (slowly!). I guess I'd do it that way again but I don't have lots of  experience with large systems like others might. 

Jesse Dahl

NABCEP PV Installation Professional
IBEW Local 292 - Electrician 
Electrical/Solar PV Instructor - HCC

Sent from my iPhone

> On Sep 28, 2016, at 6:32 PM, Corey Shalanski <corey at joule-energy.com> wrote:
> 
> We're in the process of designing our first >1MW system. It will include inverter output combiner panels (potential aggregate current >700A) located approx 100' from the system disconnects.
> 
> Since we have never previously dealt with wires this big (2 sets of paralleled 500 mcm?) we are thinking that direct burial (aluminum) conductors might be a good option - any suggestions? What wiring method do others use for this type of large ampacity AC circuit? UF? USE? USE-2? Other?..
> 
> --
> Corey Shalanski
> Joule Energy
> New Orleans, LA
> 
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