1. It is OBLIGATORY to check PE connection for all Mode 2,3,4 EVSE (“chargers”). EVSE without faulty PE detection should not be used (Norm: EN 61851-1, see excerpt photo)
2. It highly reduces the risk of death by electric shock.
How we do tests?
1. Using an extension cable without PE installed (see photo) we check if charger properly detects PE fault.
2. By opening and checking inside if PE lines are thick enough and not disconnected by relays (bad design).