We were asked to install a zappi v2 made by the British manufacturer MyEnergi. The connected SWA cable using IP68 gland properly earthing the armour at both ends of the cable. We protected the cable using 32A Type B MCB without RCD protection. The zappi unit includes RCD protection at 30mA, DC monitoring and PEN conductor failure monitoring which meets bs7671 guidance avoiding the need for an earth rod on a PME system.
We think this is one of the best chargers on the market, British innovated and built.