AC module wiring off of roof

[bbartmasse r]

Hello,

I have a basic question about the wiring from the roof when using SunPower AC modules.

Essentially each group of 12 modules is a 20 amp circuit with two hots and ground.

So let's say I have 100 modules, that's five circuits. Code wise how can I deal with the ground wire? can I run a single #8 to the roof and connect the five grounds from each circuit to this one #8? Or do I have to run a separate ground for each circuit back to the combiner panel?

Thanks for the advice.

B

 

[ggunn]

Hello,

I have a basic question about the wiring from the roof when using SunPower AC modules.

Essentially each group of 12 modules is a 20 amp circuit with two hots and ground.

So let's say I have 100 modules, that's five circuits. Code wise how can I deal with the ground wire? can I run a single #8 to the roof and connect the five grounds from each circuit to this one #8? Or do I have to run a separate ground for each circuit back to the combiner panel?

Thanks for the advice.

B

100 modules would be a minimum of 9 circuits, but yes, you can combine the grounds in a junction box and run a single #8 EGC back to the service.

 

[bbartmasse r]

100 modules would be a minimum of 9 circuits, but yes, you can combine the grounds in a junction box and run a single #8 EGC back to the service.

You're absolutely right, I was writing in a hurry, thanks for the correction and the response