RCD

[Lectrician]

When I was still an apprentice, I can remember an RCD nuisence tripping during the night - every night.

To cut a huge fault finding story short......

It was due to an overhead neutral being lost on a PME supply in the adjoining property. The storage heater load travelling down the main bond to the lead water pipe(I guess), and some of this current travelling out via the cutout in the other house via a N to E fault, tripping the RCD (they where TT). It was fine during the day, as the load next door was low, so only a tiny amount circulated through the property.

 

[romchik]

It is N to E fault. It is working now!
Thank you guys

 

[Lectrician]

I was confident it was! Glad it's sorted

 

[romchik]

It was easy to find. I still have some decorating work and i am not using circuit upstairs. One of the sockets was off and N was touching E and i mean they were touching each other.
If it was somewere under floor and i could not see the fault is it possible to find the fault without Insulation Tester ? (Insulation Tester is expensive to buy for person who may need it once or twice)
Thank you

 

[ban-all-sheds]

I do not have insulation tester

You rewired your house and yet you don't have one of these?

(Insulation Tester is expensive to buy for person who may need it once or twice)

Less than the saving you made by doing your own rewire...

 

[romchik]

Hello mister Ban.
Firstly i did not rewire my house myself.
Secondly i do not think anyone is interesting in your sarcastic remarks....

 

[Damocles]

BAS, he had told us that already.

Just an ordinary multimeter should be able to detect a dead short between any two conductors. Preferably one which can read to 0.01 ohm then you can accurately check circuit resistance not just continuity.
The fancy meters work at high voltage which might show up faults an ordinary meter will miss.

 

[ban-all-sheds]

Hello mister Ban.
Firstly i did not rewire my house myself.

My apologies, I thought you did.

Secondly i do not think anyone is interesting in your sarcastic remarks....

Wasn't sarcasm - it was genuine - if you had done your own wiring you would have saved more than enough to pay for test equipment.

 

[ban-all-sheds]

BAS, he had told us that already.

So he did.

Completely missed that.

Apologies to all for going by my faulty memory..

 

[Damocles]

Cheers BAS, falling asleep myself.

 

[romchik]

Cheers guys. RCD is still working