Ironridge Solar Ground Mount: A 7-Point Quality Checklist

I'm a quality/compliance manager at a solar racking manufacturer. I review every mounting kit that leaves our facility—roughly 200+ unique configurations a year. In 2024, I rejected about 7% of first deliveries because of hardware mismatch, missing torque specs, or packing slips that didn't match the P.O. That might sound harsh, but a ground mount is a structural system. Small errors show up years later.

If a customer asks 'what is our solar system supposed to include?' they usually mean the whole PV plant. The mounting system is the part they never see, but it's what holds everything together. This checklist is for solar contractors, EPCs, and installers working with Ironridge solar ground mount systems. I use it before ordering hardware and again on site. You can, too.

Before You Start: Does This Checklist Apply?

Use this for Ironridge ground mount projects where the racking is already specified or you have freedom to choose the mounting system. Most steps also apply to roof mounts, but the grounding and handling details are ground-mount-specific. If you're doing a custom foundation or a high-wind region, add the engineer of record to your review—don't skip it.

The 7-Point Checklist

The steps are in the order I run them. Step 5 is the one that usually gets skipped. Don't skip it.

1. Confirm the spec against the stamped plans. Before you order, match every line item on the P.O. to the model numbers on the structural plans. 'Ironridge XR100 ground mount' is not enough. Which base? Which end clamp? Which pile height? I've seen an entire order delayed because someone chose a universal clamp that wasn't on the approved parts list. If the plan says 'verify compatibility,' check the module compatibility list before you buy. To be fair, this is the boring step. It's also the step that prevents an $18,000 mistake.
2. Check the Ironridge logo and traceability labels. When the hardware arrives, look for the Ironridge logo on the rail extrusion and on the carton. Genuine parts have a consistent embossed logo and a batch number. A blank rail or sticker-only logo is a red flag. I've caught two non-conforming batches this way in 2025 (ugh). If you're not sure, photograph the label and send it to your distributor before you take it to the field.
3. Measure splice alignment before you lift anything. Lay the rails out on saw horses and test the splices before you start driving piles. Don't eyeball it. Measure the assembly diagonally; if the difference is more than 1/8 inch over 20 feet, the clamps will bind and the modules won't sit flat. I'm not 100% sure of the exact tolerance for every rail profile, but 1/8 inch is the rule I've used for years. It catches cambered rails, bent splice joints, and rails that got dropped in shipping.
4. Torque every fastener to the number in the manual. The phrase 'that sounds tight' has no place in a solar mount installation. Every XR10 and XR100 manual gives torque values for end clamps, mid clamps, grounding lugs, and attachment points. Use a calibrated torque wrench. Then mark the bolt with paint. When you walk the row, you can tell from a distance which fasteners were actually torqued. The most frustrating part of a ground mount review is finding a row where every bolt got a torque mark, but none of them were tight. You'd think a written spec would prevent that, but it doesn't.
5. Verify the grounding path is continuous. Most installers check that the rails are straight. They forget to check the ground path. The 'if it's bolted together, it's grounded' idea comes from an era before anodized coatings and powder-coated rails became standard. Those coatings protect the metal, but they can create high-resistance joints. Run a continuity test between module frames and the ground lug before you close up the array. It's a 5-minute test with a multimeter. If it fails, the issue is usually a missed grounding lug or a paint-piercing washer that wasn't installed. Don't rely on the coating to bond—verify it.
6. Plan the handling and storage sequence. Ground mount rails are long, and they get damaged in transport more often than you'd think. If you use a van to move material, make sure your Dewalt van racking system can carry the full rail length without bending the extrusion. I saw a crew bend four rails once because they let the ends overhang and then hit a job site post. The stack was still in the wrapper, so nobody noticed until the modules didn't align. Store rails flat and support them at both ends, not just in the middle.
7. Photograph everything and save batch numbers. Take photos of every splice, every clamp, every grounding lug, every torque mark, and every label. Save the batch numbers from the rail extrusions. It sounds like overkill until you get a call-back at module level and need to know which row has parts from a specific lot. If a customer asks later 'what is our solar system supposed to include?', your photo log is the answer—it shows the mounting system was installed to spec. And if you're marketing the project as using recycled-content aluminum, keep the claim accurate. Per FTC's Green Guides (ftc.gov), environmental claims should be substantiated. I've rejected marketing one-pagers for making claims the hardware documentation couldn't support.

Three Things This Checklist Doesn't Cover

First, know your boundary. A mounting system is not a foundation. If a ground mount needs engineered piles because of wind, frost, or soil conditions, that's a geotechnical and structural engineering decision. The best hardware in the world won't fix a bad soil assumption. If a customer pushes you to 'just make it work,' the professional answer is, 'This needs a stamped plan from the engineer of record.' I'd rather lose a job than own a structural failure.

Second, trust your gut when the data is incomplete. The numbers said a certain pile spacing would work for a project I reviewed. Something felt off about the soil report—it was old and didn't match the site. I called for a soil test, and the test changed the pile depth. It added a week, but it kept the array from becoming a wind sail. Your gut is not a substitute for calculations; it's a reason to run more calculations.

Third, this checklist is for racking, not for electrical work. It doesn't cover trenching, wiring, inverters, or utility interconnection. Pair the racking scope with a licensed electrician. If someone hands you an EV charging station installation in Greensboro and assumes this same checklist applies, stop and ask—that's a different code path (NEC 625) and often a different permit process. Same principle: don't pretend to be an expert outside your lane.

The 7 steps above take most of a morning to complete. The job takes longer if you miss one. I still run through them on every Ironridge ground mount project I touch, and I make my team do the same. If you want a version to print, this checklist fits on one page.