As many will be aware, my earthing set-up is a TT earth system. This evening i opened the met box on the outside of my house soley for educational purposes. It looked very neat.
I do however have a couple of questions.
1) There is a block before the meter, which states PME on it (series 7), this block also has a part which states Henley on it. The wire from the MET comes into this block and then goes into the meter to which it connects the Live and Neutral for the consumer unit.
PME from what i understand stands for protective multiple earth and by which earth leakage current is fed back to the substation along the neutral return wire, and so to earth.
I take it the earth rod is still needed and if so will i still require my 100A Time delayed main switch. ?
2) Does PME make any difference?
I do however have a couple of questions.
1) There is a block before the meter, which states PME on it (series 7), this block also has a part which states Henley on it. The wire from the MET comes into this block and then goes into the meter to which it connects the Live and Neutral for the consumer unit.
PME from what i understand stands for protective multiple earth and by which earth leakage current is fed back to the substation along the neutral return wire, and so to earth.
I take it the earth rod is still needed and if so will i still require my 100A Time delayed main switch. ?
2) Does PME make any difference?