RCD Tripping Hell with high load

[Midwest]

^^ from what you describe a EICR won't help.
QUOTE]

As you know, I don't do EICR's. But just looking at that CU, with different makes of MCB's, inappropriate circuit identification, missing blanks in other switch gear, I indeed think a check of the remaining installation would obtain some benefit from an EICR. IMO

 

[Octopus]

As you know, I don't do EICR's. But just looking at that CU, with different makes of MCB's, inappropriate circuit identification, missing blanks in other switch gear, I indeed think a check of the remaining installation would obtain some benefit from an EICR. IMO

Not sure I agree ............. a cowboy EICR isn't likely to show anything relating to the issue.

The best thing the OP can do is keep a log of when it trips and what was being used....

 

[Pete999]

Ll54 5sd is the postcode.. just south of caernarfon in north Wales.

Well that rules me out for any practical help, my passport has lapsed.

^^ from what you describe a EICR won't help.

Read my post #5 and get that done?

Unless you know the RCD is OK, the IR is OK and you haven't got excessive earth leakage, you won't move forward.....

One other point - it "could" be the incoming supply causing this.

Hi Murdoch, you mention that an EICR probably wouldn't help, yet in your post#5 you mention IR testing RCD testing and lastly an earth leakage test. The first 2 tests IR nd RCD would be carried out in an EICR, or at least they would if I was doing it.

 

[Midwest]

Not sure I agree ............. a cowboy EICR isn't likely to show anything relating to the issue.

The best thing the OP can do is keep a log of when it trips and what was being used....

Well I go to the foot of my stairs. I've read numerous threads where members advise the complete opposite. I have my views on the costs of EICR's, and as the OP is considering a CU replacement, I'd spend my dosh on that. But you do surprise me Murdoch.

 

[Ian1981]

A ramp test may indicate that the rcd is also a little sensitive
Had one yesterday that tripped at 17mA and kept tripping on a non trip loop impedance test.

 

[static zap]

You have mentioned tripping when things are turned on,but keep a eye out for any tripping when just moving about in house (not turning anything on .)
(Like others have said , need a guy with the right gear)

 

[Octopus]

Well that rules me out for any practical help, my passport has lapsed.

Hi Murdoch, you mention that an EICR probably wouldn't help, yet in your post#5 you mention IR testing RCD testing and lastly an earth leakage test. The first 2 tests IR nd RCD would be carried out in an EICR, or at least they would if I was doing it.

To track down an intermittent tripping RCD, takes much more than a global IR - which is all that is likely with a low cost EICR.

Sure have an EICR BUT the scope of said inspection must be very detailed to make it worth while.

 

[The Ghost]

@SparkyChick to the rescue. I think there are other members as well in Wales that will be able to help. I tend to work on the basis if I don't fix it I don't charge. As I feel charging call-out is a bit of well...unfair really if you don't get somewhere even if it is just working out the fault. Maybe not remedying as the cost or whatever is too much sometimes straight away.

 

[Pete999]

Ll54 5sd is the postcode.. just south of caernarfon in north Wales.

Well that rules me out for any practical help, my passport has lapsed.

^^ from what you describe a EICR won't help.

Read my post #5 and get that done?

Unless you know the RCD is OK, the IR is OK and you haven't got excessive earth leakage, you won't move forward.....

One other point - it "could" be the incoming supply causing this.

Hi Murdoch, you mention that an EICR probably wouldn't help, yet in your post#5 you mention IR testing RCD testing and lastly an earth leakage test. The first 2 tests IR nd RCD would be carried out in an EICR, or at least they would if I was doing it.

To track down an intermittent tripping RCD, takes much more than a global IR - which is all that is likely with a low cost EICR.

Sure have an EICR BUT the scope of said inspection must be very detailed to make it worth while.

To be fair mate thee was never any mention of a global IR test, or cheap EICR, with the OP's problems, I personally think a full on EICR would highlight any problems.

 

[Octopus]

I personally think a full on EICR would highlight any problems.

Not sure I agree....... as I mentioned in a post - it could be the incoming supply!

 

[SparkyChick]

Whilst I like that part of the world for the scenery, an 8-10 hour round trip may make me a little too expensive

 

[Pete999]

Not sure I agree....... as I mentioned in a post - it could be the incoming supply!

OK how exactly

 

[Fletch]

You have mentioned tripping when things are turned on,but keep a eye out for any tripping when just moving about in house (not turning anything on .)
(Like others have said , need a guy with the right gear)

So though I believe myself to be Devine in many ways, I don't beleive I give off an Magnetic field capable of a current inducing nature.. lol..

but I have unfortunately noted that it doesn't actually make a difference where you are in the house when tripping. Mostly we spend time in the dining room, but it trips when the bedroom or lounge or even when I'm outside.

I don't really want to spend on a new CU, as I gather the one I have would be ok unless identified to be faulty?! (How a copper bar can be faulty?!). There have been various additions to the house causing the additional circuits e.g. The stair lift (socket under stairs) 90's the kitchen bathroom extension 80s. And the right hand board is solely for the heating, which has never ever tripped. (Though questionable whether the RCD has been bypassed there) but shouldn't make a difference on the constant board.

 

[Octopus]

OK how exactly

Seen recently

Loose connection on service head

Very poor incoming neutral connection

BOTH caused RCD's to trip.

 

[Fletch]

Whilst I like that part of the world for the scenery, an 8-10 hour round trip may make me a little too expensive

Even if it included free nights stay for however long you need in the scenic areas of snowdonia?!

3 mins from the beach!
10 mins from caernarfon and the base of Snowden!