Rcd advice needed faulty or fault

[Stuportsmouth]

So had to fit a new shower as old one kept tripping the rcd after few seconds assumed the shower was to fault as made a buzzing noise and tripped, on fitting the new shower it had same faukt so checked pressure of water no issue then checked wiring at box also no issue so moved onto next possibiliy of short on cable.
Yes maybe should of used multimeter and tested each one out but easier as short run in walls so run new cable exactly the same.
So decided to wire a small flex with bulb holder on that trips rcd changed the 40amp mcb to a 16 amp tried light also trips could this be a faulty rcd its rated 80amp 30ma, we also tested the the curcuit with every mcb turned off with only shower circuit on and also tripped.

Any help would be greatly appreciated as would like to think in a 6 bedroom house with each room occupied that of rcd was faulty then it would trip as currently has approx 8 circuits on and only randomly started to happen nothing new has been added.

 

[Stuportsmouth]

Update have tested all n-e using multi meter no shorts found one of the 32amp ring circuits had come away from the mcb not physically visible but have now reconnected.

Seeing that was on rcd side hoping it was that just waiting for the 40amp mcb to come back as friend took it away yesterday, then hopefully will all be up and working as Can find no faults on circuit all neutrals are on correct side aseell.

 

[Deleted member 105166]

The circuit/s need a 500V DC Insulation Resistance test, which your multimeter cannot do. Likewise, the MM cannot test the RCD. For your own sake, please get a spark to sort this out, using the correct equipment (a multifunction tester) else if there is a fire at a later stage, the insurance cover may be compromised.

 

[Bobster]

Love wind up threads like this.

What's the next bet that all the electrician friends are on holiday??

The amount of time fabricating BS in this thread, an electrician would have found the problem in less time.

 

[Stuportsmouth]

Problem is now fixed the live off 32amp mcb was obviously causing the circuit to trip as resistance check wasn' connecting thanks to everyone who has helped and I tested n-e with multi meter with no shorts anywhere so rechrckef lives to find one had snapped

 

[Bobster]

Problem is now fixed the live off 32amp mcb was obviously causing the circuit to trip as resistance check wasn' connecting thanks to everyone who has helped and I tested n-e with multi meter with no shorts anywhere so rechrckef lives to find one had snapped

Makes absolutely no sense, but go you! Well done in making your friends installation potentially unsafe.

 

[NDG Elecs]

It's only a shower... Can't do much harm...

Seriously though mate, get a spark in to test. For the sake of £60 or thereabouts you are running a risk IMO. The thread to me is incoherent at times, and some good advice has been offered. I would not have a clue about ECU faults, similarly you are lacking electrical knowledge. Not having a dig, just stating a fact.

 

[DJ Ovengloves]

Are the mcb’s actually different physical sizes, or are they fitted wonky on the busbar?

 

[DPG]

Problem is now fixed the live off 32amp mcb was obviously causing the circuit to trip as resistance check wasn' connecting thanks to everyone who has helped and I tested n-e with multi meter with no shorts anywhere so rechrckef lives to find one had snapped

Good that it is working, but I don't quite understand the above - where and what was the actual fault?

 

[telectrix]

might need to untangle that spaghetti first. what a bodge.

 

[Stuportsmouth]

The fault seemed to be the live off one of ring mains had broken so instead of having the full circuit it was only fed one way the minute I exterminated that it stopped the tripping.

Also the breaker is slightly different size but exactly the same as the others on the buzz bar I tested the circuit as previusly said by others to check for n-e short which didn' show anything.

As for why it kept tripping before is because the water valve on the shower was flow controlled and was round the wrong way so poor flow was overheating the shower and causing it to trip.

Other than the broken live on ring main there was no other faults I could find I have spoken to a friend who's gonna do a test on it soon thanks to the people that helped and inwomt be returning here as people are not overall friendly.

 

[Deleted member 9648]

Problem is now fixed the live off 32amp mcb was obviously causing the circuit to trip as resistance check wasn' connecting thanks to everyone who has helped and I tested n-e with multi meter with no shorts anywhere so rechrckef lives to find one had snapped

A high resistance connection will not cause an RCD to trip and a multimeter will not output sufficient voltage to show up most faults.
Good luck with your continuing electrical career.

 

[streamer]

thanks to the people that helped and inwomt be returning here as people are not overall friendly.

I've found people on here to be very friendly and helpful. However, when you repeatedly ignore the advice given because it's not what you wanted to hear, everyone gets frustrated and you will get some stick.

 

[Stuportsmouth]

A high resistance connection will not cause an RCD to trip and a multimeter will not output sufficient voltage to show up most faults.
Good luck with your continuing electrical career.

Well it's fixed I redone earths as Well as I think 1 had come out and exterminated all the neutrals I was going to tidy box up but left as it was as it was signed off like it before.

Things are all connected correctly it's not like ive added it to a non protected rcd circuit so a loose connection could have been there asWell, i haven't dangerously bypassed anything or added to a non rcd side like some cowboys would do it's all connected as should be and not tripping.

Also like I said yesterday when wired to a light bulb it also tripped so wasn't tripping under load even with shower was the same after doing fuse box today tested with light bulb and didn't trip fault is fixed not bodged or covered up.

 

[Octopus]

Well it's fixed I redone earths as Well as I think 1 had come out and exterminated all the neutrals I was going to tidy box up but left as it was as it was signed off like it before.

Things are all connected correctly it's not like ive added it to a non protected rcd circuit so a loose connection could have been there asWell, i haven't dangerously bypassed anything or added to a non rcd side like some cowboys would do it's all connected as should be and not tripping.

Also like I said yesterday when wired to a light bulb it also tripped so wasn't tripping under load even with shower was the same after doing fuse box today tested with light bulb and didn't trip fault is fixed not bodged or covered up.

Are you a dalek?

 

[Stuportsmouth]

Are you a dalek?

Lmfao meant to say re-terminated that' Samsung auto correct for you and the fuse box is also being changed soon in the house as it's a plastic one.
Due to current regs with the 3 yearly check I am aware that being under the stairs that they now have to be metal and non combustible with current regs.

Will have to post a pic of my consumer unit in the property I rent you will all comment on that

 

[Gavin John Hyde]

Are you a dalek?

Its not the neutral he will be exterminating if it all goes wrong, it will be the poor sod in the shower or house when it goes kaput who will exterminated.... its okay though they might find his fingerprints all over the CU so guilty as charged your honour. I don't think he will be able to use the competent person defence!

 

[camerabloke]

Aaaww I missed the fun. I fancied some popcorn

 

[NDG Elecs]

This has gotta be a wind up by admin surely. 3yr checks, needing to change board, broken ring and the 16A light cct.... It's not making much sense at all. I'm not gonna bite again after this message.

 

[Stuportsmouth]

What's your thoughts on this

 

[camerabloke]

Dog ----

 

[Stuportsmouth]

Its not the neutral he will be exterminating if it all goes wrong, it will be the poor sod in the shower or house when it goes kaput who will exterminated.... its okay though they might find his fingerprints all over the CU so guilty as charged your honour. I don't think he will be able to use the competent person defence!

No finger prints as I wore my marigolds

 

[Pete999]

Aaaww I missed the fun. I fancied some popcorn

Well you wanna get up earlier.

 

[Octopus]

Lmfao meant to say re-terminated that' Samsung auto correct for you and the fuse box is also being changed soon in the house as it's a plastic one.
Due to current regs with the 3 yearly check I am aware that being under the stairs that they now have to be metal and non combustible with current regs.

Will have to post a pic of my consumer unit in the property I rent you will all comment on that

what 3 year check?

Who says that they have to be metal?

 

[Octopus]

What's your thoughts on this

View attachment 39636

Nice boards, 2 screws on incoming tails ......never seen one go up in flames or melt! Shame they can't accept RCD's or RCBO's

 

[Pete999]

Dog ****

woof woof