As I am currently installing my first system, I have been doing a ton of reading. At this stage, I have my ironridge rails up, conduit in place, and I'm double checking my plans, rereading manuals and such.. Let me say that the rules for DC system grounding are not clearly laid out. I'm going to describe my plan, and ask that if any of you sees an error please correct me.
3 strings on the barn roof, that feed two inverters in the house through a single buried pvc conduit. I have three strings (six 10awg wires) and two grounds (also 10awg) going through the conduit. The grounds are tied into the lugs at each ironridge rail, and a grounded bushing on the emt conduit coming of the roof. I think I could use a single ground as it's all in one conduit, but two can't hurt. I will connect each ground to one inverter, and then run #8 bare copper to the water service where my main panel is grounded.
FWIW, these are older transformer type inverters. It sounds like some of the rules are a little different for transformerless inverters.
I 'think' this is correct. Though I admit I've read enough about it that I'm dizzy.
Many thanks. SD
3 strings on the barn roof, that feed two inverters in the house through a single buried pvc conduit. I have three strings (six 10awg wires) and two grounds (also 10awg) going through the conduit. The grounds are tied into the lugs at each ironridge rail, and a grounded bushing on the emt conduit coming of the roof. I think I could use a single ground as it's all in one conduit, but two can't hurt. I will connect each ground to one inverter, and then run #8 bare copper to the water service where my main panel is grounded.
FWIW, these are older transformer type inverters. It sounds like some of the rules are a little different for transformerless inverters.
I 'think' this is correct. Though I admit I've read enough about it that I'm dizzy.
Many thanks. SD
Comment