I'm looking at a design that calls for bare copper ground conducotrs to be used for grounding the various PV modules/structures in an array. I was wondering however if there was anything in the NEC that required these conductors to be bare, or if they could be THHN conducotrs with a jacket? I do not believe there is anything preventing the use of THHN cables other than it will be easier to terminate the bare copper condutors to the modules since you dont have to strip the cable to land it on grounding lugs.
For all the ground cables from the combiner boxes to the inverter, etc.. regular THHN cable is called for the ground? Is there anything in the NEC that dictates what type of cable bare conductor or otherwise is to be used for PV installations?
For all the ground cables from the combiner boxes to the inverter, etc.. regular THHN cable is called for the ground? Is there anything in the NEC that dictates what type of cable bare conductor or otherwise is to be used for PV installations?