26-11-2015, 12:43 PM
Mrs has ordered the loop tester, meanwhile the TT system project continues at the chalet, the chalet CU's 2 pole isolator switch has been replaced with a 30ma 63A 2 pole RCD, disconnected the exported earth and bonding from the house to the chalet (don't do that folks) connected the earth rod to the earth terminal in the chalet CU, wired up a 7.8k resistor (the only suitable resistor I had) between live and earth in a 13 amp plug, plugged it in and switched on the socket, the RCD tripped ok, the RCD in the house CU that feeds the chalet CU did not trip, I tried the test four times, not conclusive by any means I know, the loop tester when it arrives will give us an idea as to what's what, if the earth loop impedance turns out to be over 200 ohms I'll have to sink some more rods down in hope....
The power to the chalet in the meantime has been disconnected.
Lawrence.
The power to the chalet in the meantime has been disconnected.
Lawrence.
