Description
The Clip That Bonds Every Panel Into the Earthed Array
For an array to be properly earthed, it is not enough to earth the rails alone — each panel frame must also be electrically connected into the earthed metalwork. The earth clip is the component that does this, quietly and automatically, as part of the normal panel-clamping process. It is a small toothed stainless steel clip that sits in the contact zone between the panel frame and the mounting rail. When the panel clamp is tightened, the clamping force drives the clip’s teeth through the anodised coating on both the frame and the rail, biting into the bare conductive metal of each and creating a solid electrical bond between them.
The elegance of the earth clip is that it requires no separate wiring and no extra step. The installer places the clip where the panel meets the rail, then clamps the panel as normal — and the bonding happens through the act of clamping. Every panel secured this way is automatically bonded into the earthed structure, so the whole array becomes a single continuous earthed metal network rather than a collection of electrically isolated frames.
Earth Clip vs Grounding Lug — Two Parts of One System
These two earthing components are often confused, but they do different jobs and a compliant installation uses both. The earth clip bonds a panel frame to the rail it sits on — a panel-to-rail connection, made by clamping pressure, with no wire involved. The grounding lug, by contrast, is where the actual earth conductor (the green-and-yellow earth wire) terminates on the metalwork, carrying the bonded network down to the ground rod.
Think of it as two layers. The earth clips knit all the panels and rails together into one electrically continuous body of metal. The grounding lug then connects that unified body to earth via the conductor. Without the clips, individual panel frames could be isolated from the earthed rails by their anodising. Without the lug, the bonded metalwork would have nowhere to send fault or surge current. Used together, they produce a fully earthed array where every metal part is bonded and the whole assembly is connected to ground.
Technical Specifications
| Specification | Detail |
|---|---|
| Type | Solar earth clip / bonding clip |
| Function | Bonds panel frame to mounting rail electrically |
| Material | Stainless steel with piercing contact teeth |
| Activation | Driven home by panel clamp pressure — no separate fastening |
| Anodising Penetration | Teeth pierce the anodised layer on both frame and rail |
| Wiring Required | None — it is a wireless bonding component |
| Placement | Between panel frame and rail at the clamp position |
| Corrosion Resistance | Stainless steel — suitable for coastal and humid exposure |
| Service Life | 25+ years matching the array |
How Earth Clips Are Used
Earth clips are placed at the points where panels are clamped to the rails, so the bonding is established at the same contact zones that hold the panels mechanically. The general approach on a Kenyan installation:
- At clamp points: a clip sits between each panel frame and the rail where a mid-clamp or end-clamp secures the panel
- To bond adjacent panels: as each panel is clipped and clamped, it joins the continuous earthed network with its neighbours
- Across the array: enough clips are used that every panel frame has a bonded path back to the earthed rails
The exact number per panel is set by the earthing design, but the principle is that no panel frame should be left electrically isolated. An EPRA-certified technician specifies the bonding scheme for the installation.
Why Bonding Cannot Be Skipped
A solar panel frame that is not bonded into the earthing system is a piece of isolated metal that can hold a charge. If a fault inside the panel energises its frame, an unbonded frame has no path to discharge that voltage safely — it simply stays live until someone or something touches it. Bonding every frame ensures that any such fault current flows immediately into the earthed network and away to ground, where protective devices can act on it. The earth clip is what makes that bonding practical at scale, turning what would otherwise be a fiddly wiring job at every panel into a simple by-product of clamping. Leaving the clips out to save a few shillings per panel leaves frames isolated and the installation non-compliant.
Cross-Sell: Build the Complete Earthing System
- Grounding lugs: to terminate the earth conductor and connect the bonded array to the ground rod
- Panel clamps: mid-clamps and end-clamps — the clips work as the panels are clamped
- Mounting rails: 4800mm and 4400mm rails
- Roof anchors: L-foot screw kit and tile roof hook
- Full bill of materials: solar calculator or request a quote
