Off-grid safety requirement
Earthing System
Fault-current path, equipment bonding and lightning protection support.
Earthing helps protect people and equipment by giving fault current and surge energy a controlled path. It also supports SPD and lightning arrester performance.
Why It Matters
Earthing reduces shock risk during equipment faults.
Proper bonding helps protection devices operate correctly.
Lightning and surge protection depend on a reliable earth path.
Required Checks
Equipment earthing for modules, structure, inverter and DBs.
Earth conductor size and continuity.
Earth pit location, accessibility and corrosion protection.
Lightning arrester and down-conductor routing where required.
Earth resistance test where applicable and possible.
Required Documents
Earthing layout.
Earth pit details.
Lightning arrester specification if used.
Earth resistance reading record where performed.
Photos of earth pit, bonding and down conductor.
Installation Details
Bond module structure, DBs and inverter body to the designed earth path.
Avoid sharp bends in lightning down conductor.
Keep earth connections tight, visible and serviceable.
Connect SPDs to effective earth with short routing.
Handover Records
Earthing location and quantity.
Earth test reading if available.
Lightning arrester installation photos.
Inspection schedule.
Service Notes
Inspect earth links for corrosion or looseness.
Check earthing and SPD after major storms.
Keep earth pits accessible for testing.