Hi all,
A customer has complained of rcd tripping on the garage circuit causing the garage alarm to sound.
Garage is wired in 2.5mm SWA from house consumer unit split load board 20A mcb.
A garage consumer unit is provided with one lighting circuit one socket circuit. Garage alarm is spurred from socket.
There is an outside light attached to the garage.
Something was causing the rcd in the house to trip.
Customer called an electrician to sort the problem.
Electrician left without resolving problem.
They call me.
I go take a look.
Socket tester says Live earth reversed. I call rubbish.
Carried out some tests to find all circuits live but not functioning.
I open the consumer unit in the house to find the neutral wire to the garage has been removed!
Live still connected MCB on.
Now am I missing something magical and mystical?
My question is, why would he have done this.
I carried out R1 + R2 test - all good, same reading as on the EIC. Installation new 6 months ago.
I replaced the neutral and energised to try replicate the tripping. Everything is fine.
it’s a good job the customer didn’t go poking around in the garage sockets believing they were dead when the line conductor was actually energised.
I am just trying to get my head round the removal of the neutral and why this NICEIC spark felt this was a good idea?
Thoughts
