Electrical safety
Solar earthing and bonding in South Africa — what should be on my quote?
Solar adds metal on the roof and sensitive electronics in the garage. Earthing and equipotential bonding tie exposed conductive parts to a safe reference so faults and surges have a path. Your quote should include bonding of module frames/rails, inverter earthing, and coordination with SPDs — verified by a registered electrician on the CoC.
Homeowner checklist
- Ask for a simple bonding sketch or photo of earth connections.
- Confirm the earth electrode / existing earthing system was tested.
- Reject floating metal rails “we’ll earth later”.
- Keep the CoC — property sales and insurance claim handlers ask for it.
This is educational, not a wiring method. SANS 10142 and the inverter manual govern the detail.
Related answers
Need a quote that matches this answer? Structured briefs for SA installers — compare designs before you sign.