Shawn pavich
Member
- Location
- Fresno ca
On a ground mount micro inverters residential with subpanel on array is the ground mount a separate structure do I have to drive a ground rod thanks
Seprate structure
- Thread starter Shawn pavich
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jaggedben
Senior Member
- Location
- Northern California
- Occupation
- Solar and Energy Storage Installer
690.47(D) says yes, but it exists in the 2008 and 2014 codes, but not the 2011 code.
If there is more than one micro-inverter branch circuit on the structure, then 250.32 says yes, you need an electrode.
If the mounting structure meets the requirements of 250.52(A)(2) - one structural member in contact with the earth for 10ft or more - then you can use that and not install a rod.
If there is more than one micro-inverter branch circuit on the structure, then 250.32 says yes, you need an electrode.
If the mounting structure meets the requirements of 250.52(A)(2) - one structural member in contact with the earth for 10ft or more - then you can use that and not install a rod.
Under recent Code editions, if a grounding electrode system (GES) is required and you use one ground rod as an electrode to establish that GES, a second ground rod would be required unless you prove that one has 25 ohms or less resistance to earth using a standard electrode resistance measurement means.
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