Anybody know how the 2017 NEC defines ground-mounted systems? My understanding is that it's considered a structure and not a building. But I'm not finding much on it.
I'm trying to determine the need for raceway labels, (690.31(G) is what I'm referencing). I don't have the code but from what it sounds like; raceway labels apply to all PV System DC circuits on or in a building. But if there is a distinction by the NEC between a "structure" and a "building", and a ground-mounted system is a "structure", like a solar farm for example, then raceway doesn't require labeling.
The labeling I'm referencing reads :"WARNING: PHOTOVOLTAIC POWER SOURCE".
Any clarification is greatly appreciated!!