Dear Friends,
As Harrison has stated, we do have an earth rod at the start of the installation and the cutout design is same like he had mentioned.
But the problem is the MCB+RCCB combination protection being just before the appliance or Distribution Board,in case of a earth leakage in the feeder cable(normally doesn't happen ,but poor installation practices may cause it to happen) from the main switch board to the Distribution board or appliance - the downstream RCCB will not sense the fault and the fault will slowly over a period of time develop into phase to phase short and if the magnitude of the fault current crosses the set limits ,the MCCB will trip ,but by then considerable damage to the installation might have occured.
My doubt/ question is there any stipulation that one should mandatorily provide and earth leakage protection at the start of installation of specification as stated in my orginal post ??
