[stevehull]

Pinball, - what G wire are you running in your 12.5 kW array down to the 220 circuit box? This would would be around 55 amps (peak).

I am interested as I am designing a similar sized system and don't want to put in too small a wire. My calculations show #6 stranded copper should have a low enough voltage drop (and hence low heating coefficient). # 4 copper gets really pricey . . .

But performance is always the key and am wondering if you will see localized heating at solar noon on a high kW production day with your installed wire.

This is where a FLIR is invaluable besides looking for insulation voids.


Thanks!


Steve