We checked with local inspector and he stated that we must have add new Ground Rod at the base of the Solar Panel Ground Mount.
I have attached our new 1-wire diagram for our first Solar Project - 2500 Watts, 12 Panels, Ground Mounted.
This new Ground Rod has us confused about the "DC GEC" connection.
The Green dotted line (in the wire diagram) is the 10 AWG Green THWN (EGC) conductor ...
"a" - It starts at the Ground Bar inside the 200 Amp Main Service Panel and connects to the Ground Bar inside the "Outside AC Disconnect Switch".
"b" - Starts at the Ground Bar inside the AC Disconnect Switch and connects to the "AC EGC" Terminal inside the Inverter.
This Equipment Ground Conductor (EGC) is not continuous.
One of the Orange dotted lines (in the wire diagram) is the 6 AWG Bare (GEC) conductor ...
"c" - It starts at the "DC GEC" Terminal inside the Inverter and connects to the Ground Bar inside the DC Disconnect at the Array
"e" - The same wire (continuous) exits the DC Disconnect and is irreversibly bonded to the new underground 6 AWG.
This Grounding Electrode Conductor (GEC) is continuous.
Then we considered this at Wiring Location "e" ...
* Irreversibly Bond the 6 AWG from the Solar Panels to the new underground 6 AWG, too.
* Irreversibly Bond the 6 AWG from the Frame / Rack to the new underground 6 AWG, too.
And we need to dig a trench to lay in the underground ground-to-ground 6 AWG bond wire.
Does this "2nd Ground Rod" design comply with NEC ?
I have attached our new 1-wire diagram for our first Solar Project - 2500 Watts, 12 Panels, Ground Mounted.
This new Ground Rod has us confused about the "DC GEC" connection.
The Green dotted line (in the wire diagram) is the 10 AWG Green THWN (EGC) conductor ...
"a" - It starts at the Ground Bar inside the 200 Amp Main Service Panel and connects to the Ground Bar inside the "Outside AC Disconnect Switch".
"b" - Starts at the Ground Bar inside the AC Disconnect Switch and connects to the "AC EGC" Terminal inside the Inverter.
This Equipment Ground Conductor (EGC) is not continuous.
One of the Orange dotted lines (in the wire diagram) is the 6 AWG Bare (GEC) conductor ...
"c" - It starts at the "DC GEC" Terminal inside the Inverter and connects to the Ground Bar inside the DC Disconnect at the Array
"e" - The same wire (continuous) exits the DC Disconnect and is irreversibly bonded to the new underground 6 AWG.
This Grounding Electrode Conductor (GEC) is continuous.
Then we considered this at Wiring Location "e" ...
* Irreversibly Bond the 6 AWG from the Solar Panels to the new underground 6 AWG, too.
* Irreversibly Bond the 6 AWG from the Frame / Rack to the new underground 6 AWG, too.
And we need to dig a trench to lay in the underground ground-to-ground 6 AWG bond wire.
Does this "2nd Ground Rod" design comply with NEC ?