MOST PEOPLE HAVE heard of RCCBs (residual current circuit breakers), often referred to as residual current devices (RCDs) – they're the vital things that prevent us being electrocuted when we run over the cable with the electric mower.
But there's a lot more to them than just stopping inept mains electric mower users from clogging up A&E or possibly, meeting their maker.
RCCBs and RCDs are clever pieces of electronic wizardry that can detect fault conditions in an appliance/electrical circuit and isolate the power supply in a fraction of a second, preventing damage to the appliance and, more importantly, the possible electrocution of the user.
Circuit breakers have long been mandatory in caravans. Older models may still not have RCCBs and miniature circuit breakers (MCBs), but both can be retrofitted by
