Borrowed earth Discussion ThreadBorrowed earth Electrical Advice
I have found that the garage light is on some original 2 wire from the 1970s. I could change the fitting to a class 2 but would like to know why I cannot borrow an earth from the nearby ringmain with 4mm. All domestic earths are bonded together independent of MCBs or RCBOs, so there cannot be any potential difference in the earth circuitry should anything fail.
Borrowed earth for the original thread on Electricians Forums
I have found that the garage light is on some original 2 wire from the 1970s. I could change the fitting to a class 2 but would like to know why I cannot borrow an earth from the nearby ringmain with 4mm. All domestic earths are bonded together independent of MCBs or RCBOs, so there cannot be any potential difference in the earth circuitry should anything fail.
Borrowed earth for the original thread on Electricians Forums
