On Monday, 9 September 2019 03:50:13 UTC+1, John Rumm wrote:
On 09/09/2019 00:07, tabbypurr wrote:

Picked up an old loop tester with 25A L-E test current. Obviously
this is not compatible with RCBOs. What exactly can one do with it &
how?

Test loop impedance, having bridged out the RCD first :-)

Just bridging it would be dangerous surely. Bridge N and fusewire or MCB the L. But Fs have R, changing the result. What's the way forward?

Could it test earth electrodes too?


NT