Guides

Quick answer: An EV charger needs a dedicated earth electrode with a measured resistance below 5 ohms — and it has to be measured with an earth tester, not assumed. This is the item most Pakistani installs skip or fake, and it quietly disables everything else: your RCBO can only clear a fault if there's...

Quick answer: An EV charger produces smooth DC leakage current under fault, and that blinds the ordinary Type AC RCD fitted in most Pakistani boards — so a normal RCD is never acceptable. You need one of two things: a Type A RCBO/RCD, but only if your charger has built-in 6 mA DC fault detection (check the...

Quick answer: A 7 kW single-phase EV charger draws about 30–32 amps continuously for hours at a time, so it needs a 40 A MCB — not a 32 A one. But the breaker is only half the job. On its own it does nothing to stop electrocution or a DC earth fault, so a 7 kW charger circuit...