Hi
It’s a bad setup but I went for a call out in the night in a residential unit.
There’s a rcd in its own enclosure feeding a 14 way board that had tripped.
I reset it didn’t trip.
I passed 2 mornings later and still hadn’t tripped.
Whilst there on first visit I stuck my earth leakage clamp around the outgoing rcd tails and
Around 9amps
Fluctuating next minute was 6amps
also similar amps around main earth.
The biggest culprit and most likely was outside lights which dropped it from 9amps to 2.5
Another lighting circuit dropped it to 1 amp when both off.
how was there 9amps imbalance on tails and 30ma rcd not tripping ?
I forgot to do a ramp test.
It’s a bad setup but I went for a call out in the night in a residential unit.
There’s a rcd in its own enclosure feeding a 14 way board that had tripped.
I reset it didn’t trip.
I passed 2 mornings later and still hadn’t tripped.
Whilst there on first visit I stuck my earth leakage clamp around the outgoing rcd tails and
Around 9amps
Fluctuating next minute was 6amps
also similar amps around main earth.
The biggest culprit and most likely was outside lights which dropped it from 9amps to 2.5
Another lighting circuit dropped it to 1 amp when both off.
how was there 9amps imbalance on tails and 30ma rcd not tripping ?
I forgot to do a ramp test.