Grounding lugs and clips rank among the most important parts of photovoltaic systems. This article briefly shows how to figure out the number of clips and lugs needed during installations.
Grounding Clips (WEEB - PMC, UMC, SMC)
Order one grounding clip for every two top mounting clamps (mid + end clamps).
Basically, the grounding clips are used to ground each module with the rail. You don't need clips for every clamp. The red cross marks the location of the grounding clips.
Click to download the installation manual in .pdf version.
Grounding Lugs (WEEBL 6.7, WEEBL 8.0)
Order one grounding lug for each span of rail and two for each rail splice. Mainly, you would need one grounding lug for each rail span. However, you have to bond the rail segments that are connected with a splice. For each splice you would either buy one bonding jumper or two grounding lugs. The red cross marks the location of the grounding lugs.
Comments
Thanks for this article. Question what is the difference between the Weebl 6.7 and the Weebl 8.0 grounding lug?
Thank you. The only difference is the bolt diamter size. Installation of the WEEB is the same. The size depends on which brand of racking equipment you are using.
eg. Unirac requires WEEBL 6.7, Schuco WEEBL 8.0.