Sure, you'd have to figure out the dividing line between "equipment only" and a "structure". Not sure if it's reasonable to say that the entire ground mount supporting apparatus is equipment.
How so? I would say PV output conductors meet the definition of feeder.
Maybe.......
well, the UL listing is what qualifies a piece of metal that doesn't meet the measurements, as an electrode.
I am skeptical. Can you show me that language? Even if it's there, I don't see how UL can approve an electrode that doesn't meet NEc requirements.
Let's not rehash this. It's not ultimately relevant to whether a separate EGC is needed.
Maybe they fall under supplemental/supplementary grounds. But yes, definitely not EGCs.
UL, CSA etc., are literally the entities that list/approve parts/equipment for the NEC. "UL approved"... I didn't know this was unknown.
What I meant was can you show me language in UL 1703 that describes requirements for grounding electrodes or literature from a product that Says, "qualifies as grounding electrode per ul 1703".
Ok interesting, I hadn't noticed that. Also (8) may apply, bit it is quite vague and doesn't say who decides.
I thought that might be the case. All these numbers get mixed up in my head. Anyway, UL 2703 does not deal with grounding electrodes, just that the racking can act as an EGC in the array as a replacement for running a wire EGC between modules and the racking. In large ground mounts, a UL 2703 listed rack will usually be mounted on an unlisted support system that includes the foundation. For the foundation to be considered a grounding electrode in the NEC it has to meet the UFER requirements. If it does not meet the UFER requirements the foundation steel can still be tied into the EGC system but it's not an official grounding electrode. But the more ground contact the better I say.
Kind of... NRTLs test equipment that is submitted to them by the manufacturer to the relevant UL Standard and if it passes then the equipment gets put on a list and gets a mark. The NEC and AHJs can then refer to the list and require the mark if desired. If you get into it there is a lot of back and forth between UL people and people on the NEC code making side over which is more important. Mostly good-natured ribbing. UL 467 covers grounding electrodes, but grounding electrodes are not required by the NEC to be listed if they meet the design requirements in the NEC.
You were right in the thick of it.
Ah, so I was, how easily I forget. Perhaps because I can't see how it's possible to read the definition of feeder differently. But not relevant for the discussion here, as you mentioned.
