Grounding Solar Panels
Ground Lugs & Continuous 6AWG GND System
Run a 6AWG ground wire from the 8ft ground wire to each of the posts, unistruts, and at least the first solar panel. You can either connect it to each panel or use the bonding jumpers between the rest of the solar panels.
$40+$3 per panel
Ground Rods: https://amzn.to/4m9Crlj
Ground Clamp: https://amzn.to/3JT4ybd
Ground Wire 6AWG: https://amzn.to/46qNcd5
GND Lugs: https://amzn.to/3K9Qj1W
Bolts: https://amzn.to/4nCBuD9
Lock Nut: https://amzn.to/4nb8LG0
Tooth Washer: https://amzn.to/3VoZaz8
Ground Rod to First Panel & Frame
Pound an 8ft 5/8” ground rod next to the array and run a ground wire that is at least 6AWG to the solar panel frames, & mounting system.
$40 Ground Rod
Ground Rods: https://amzn.to/4m9Crlj
Ground Clamp: https://amzn.to/3JT4ybd
Ground Lugs: https://amzn.to/4nvrxHB
Ground Wire 6AWG: https://amzn.to/4plhir8
How To Video: https://www.youtube.com/watch?v=1ldNGpd7ebY
Ground Jumpers Between Panels
This is a cheap way to create a jumper between the panels. If you are using 12AWG GND bonding wire you will need to have a string overcurrent protection 20Amps or lower. Note that the posts and Unistrut will need the 6AWG Wire to the 8ft GND rod.
Costs about $0.60/panel
Ground Wire 12AWG: https://amzn.to/41RFV4M
Ground Screws Posts & Unistrut: https://amzn.to/4mVnxAo
Ground Screws To Panels: https://amzn.to/4mVnLHK
How To Video: https://www.youtube.com/watch?v=1ldNGpd7ebY
Clip On Panel Bonding Jumper
Costs $3-$6 per panel
With its innovative design, the DynoBond system can provide cost-effective grounding for any solar system with aluminum-framed solar modules. The installation is toolless — simply push the DynoBond onto the frame of each module to create a bond between adjacent panels.
The angle of the panels has no effect on how the DynoBond is installed so that it can be used on both flat and pitched roofs. It creates a reliable, low-resistance ground path using the panels’ own frames, saving time, materials, and money compared to the labor-intensive, traditional grounding process that requires installing individual lugs on each panel and then connecting them with a grounding cable.
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