I'm looking into mounting solar panels on a standing seam roof and I'm considering using the S-5-N Mini seam clamps. These dedicated solar clamps are priced over $8 each, and I'm curious about what benefits they offer compared to using standard stainless bolts and washers which are only about $0.08 each. What additional value do the clamps provide to justify the higher cost?
3 Answers
Using an S-5 clamp kit is definitely a solid choice. I installed my system with the S-5 setup, and those clamps actually bite into the aluminum frame of the panels. This electrical bonding means you only need one ground wire, and you don’t even have to keep tightening them once they're in place! That's worth the extra cost in my book.
What you're paying for with those S-5-N Mini clamps is the security of knowing they've got the data sheets, calculations, and insurance approvals backing them. It's a lot safer than just winging it with a basic washer and bolt. Plus, there’s peace of mind in knowing they’re specifically designed for this kind of installation.
You might run into issues using just any washer. A standard washer is likely to warp under pressure, and combining different metals like aluminum and stainless can lead to corrosion. If you're serious about installing solar, investing in quality clamps that are meant for this purpose will save you headaches down the road.