Calculation support, not a guaranteed safety decision.

Installing earthing grids and bonding connects new conductors into systems that may already carry fault or induced current.

High-energy check

Treat existing earthing systems as energised. Induced current, fault current and lightning make an earth conductor dangerous to break or bridge.

This task's main energy sources are not calculated by this tool. Use the trigger checks below and competent-person verification.

Trigger checks

Direct controls to verify

Ticks stay on this screen only. Nothing is saved or sent.

For your SPA or pre-start

State whether the earthing system is connected to an energised network, the sequence for making and breaking connections and who authorises it.