trouble with newly installed MK c/u

[jenions]

recently changed an old fuseboard to a new MK consumer unit with 2rcbo's and then RCD with 5 mcb's on it, now i IR all the circuits and all came out at <299Mohm but since day 1 the rcd has tripped whenever a high load is switched on? i tried the up and down ring and the fridge radial on 1 of the rcbo's (40A) and they worked fine but if i put them back on the rcd side they trip. anybody got any ideas? also the test button on the rcd isnt working, now this is the 2nd rcd ive tried as i changed the 1st 1 just incase that was faulty.

 

[nickblake]

Just to make i clear Tony when i replied i was in no way having a go . it was just a scinario that i have come across , and the reason i mentioned the outside lights , electricity can do wird things and with the addition of RCD make the whole job more intresting

 

[JamesBrownLive]

RCBO's - They are the future!!! I got so fed up with RCD's and shoddy quality I only fit new boards decked out with RCBO's now, cost has come down so much its not all that much extra IMHO.

But don't you need an RCBO for each circuit, as opposed to having a single RCD that covered a few? Or can you get RCBOs that can cover more than one circuit?

Cheers

 

[ezzzekiel]

Just to make i clear Tony when i replied i was in no way having a go . it was just a scinario that i have come across , and the reason i mentioned the outside lights , electricity can do wird things and with the addition of RCD make the whole job more intresting

cant see why not

this is one of the worst statements ive ever read lol

For gods sake it’s not difficult if the RCD fails to trip on test, the faults in the RCD.

 

[topquark]

But don't you need an RCBO for each circuit, as opposed to having a single RCD that covered a few? Or can you get RCBOs that can cover more than one circuit?

Cheers

You can, as with MCBs, put more than one circuit into an RCBO but it's not good practice. There's nothing wrong with mixing RCBO's, MCB's and an RCD(s) in a consumer unit if you want to achieve that (and have the necessary module space).

 

[jenions]

i know the wirings messy inside, but ive got no slack on any cables to try neaten it up so its the best i can get it. still havent got job sorted only just got access to property again

 

[Guest123]

I can spot one fault straight away, probably what is causing the tripping problem too.

 

[Richard Burns]

yes even though the picture is a bit out of focus, interesting extra bit of copper there?

 

[ipf]

I can spot one fault straight away, probably what is causing the tripping problem too.

Without the insulation?

 

[Nolnoc]

Is the neutral blocks linked out.??????? Hard to make it out properly

When Tony sees this I reckon there might be a bit of a -------ing lol

 

[jenions]

thats the way it came :/ never used an mk board before

 

[ipf]

What's MK got to do with it?

 

[GLENNSPARK]

Definetly looks like some sort of shunt between neutral bars.....

 

[vernam616]

thats the way it came :/ never used an mk board before

Are you being serious?

yet again im shocked to what basic knowledge an electrician has, very worrying some of the posts you come across on this forum

Id identified that problem within 5 seconds of opening the photo, more than likely because im time-served, and im pretty sure others identified it too

 

[telectrix]

me too. the main switchy is on gthe wrong side of the board. :hurray:

 

[polo1]

C'mon lads, put the man out of his misery:svengo: