Search the forum,

Discuss Today's board change in the UK Electrical Forum area at ElectriciansForums.net

I am not a tywrap man myself andy, but the board didn't look untidy and it was only a few small cores, no big issue IMO, now if it was a 36 way board and every core wrapped I would be jumping up and down about it lol.

I wasn't casting any aspersions over the CU in this thread, just saying that I have a habit of not using them caused by a previous arse chewing .. lol
Strangely enough, thinking back, the same guy liked me ty-wrap CPCs and neutrals together in large TP+N boards..... He was Irish though.
 
I am not a tywrap man myself andy, but the board didn't look untidy and it was only a few small cores, no big issue IMO, now if it was a 36 way board and every core wrapped I would be jumping up and down about it lol.

So it's better not to ty-wrap grouped conductors in any size of CU/DB then!! ...lol!!
 
I wasn't casting any aspersions over the CU in this thread, just saying that I have a habit of not using them caused by a previous arse chewing .. lol
Strangely enough, thinking back, the same guy liked me ty-wrap CPCs and neutrals together in large TP+N boards..... He was Irish though.
LOL, haha
 
Ill probably not put them on next time now you have all said that, probably got another three board changes over the next week, so ill see what happens, to be honest, its only derated it fractionally as its only a tiny bit thats bunched, plus they would all be in exactly the same position if not tied anyway.

but thanks though.

the hager board has a much tighter tollerance on the din rail, or the MCB even, when you tighten them up they don't slant like the MK boards do.

I just prefer them, I think they are a lot better.

:angry_smile:

Just put my first (and last) MK board in. Horrible. RCD wouldn't trip, slanting MCBs, pre-wired links pulled out of crimps...

That Hager is nice, but try a BG (British General). You won't be disappointed.
 
:angry_smile:

Just put my first (and last) MK board in. Horrible. RCD wouldn't trip, slanting MCBs, pre-wired links pulled out of crimps...

That Hager is nice, but try a BG (British General). You won't be disappointed.

First and Last MK board I'll be putting in as of a few weeks ago too. Bloody things are a nightmare. Talk about pre-wired RCD link bird nest!!
 
The MK boards are made in China now like most Boards, however the factory where they are made is a different one than other brands because they are terrible in quality, almost as bad as proteus which is made over here haha
 
Unfortunately I've got about 20 mk mcbs, new ones in stock... I'll hang on to them for a bit.

Im still not sure about what to do about a new board for my new house, ideally I need a 7+7 + 4 unprotected ways...
 
Unfortunately I've got about 20 mk mcbs, new ones in stock... I'll hang on to them for a bit.

Im still not sure about what to do about a new board for my new house, ideally I need a 7+7 + 4 unprotected ways...
Make your own, buy a 24 module Crabtree starbreaker board and seperate busbars and RCDs and main switch, great boards.
 
Unfortunately I've got about 20 mk mcbs, new ones in stock... I'll hang on to them for a bit.

Im still not sure about what to do about a new board for my new house, ideally I need a 7+7 + 4 unprotected ways...

for my own place i'd be using SPSN RCBO's throughout, I can PM you details of where I get them from if you want
 
I was just looking at that, I'm pretty sure it will do what I need, Ddies said they only knew of a 5+6+3, but this is much bigger!

its going to be one of the first jobs when I move in, I want my CCTV on its own rcbo, alarm on one, compressor on one, smokes on one, then I've got about 12 other circuits.
 
a single pole breaks just the L. a spsn breaks L and N afaik.
 
because if the N is not disconnected, a N-E fault is not cleared.
 
no... any RCBO will disconnect on a L-E or a N-E fault, due to the current imbalance. what i am saying is that a SPSN breaks the N as well as the N.whereas a SP RCBO only breaks the L.
 
Ill be honest I've never really thought about it, I'm guessing a normal rcd or rcbo just disconnects the line then, so really one that disconnects both has to be a better option.
 
for my own place i'd be using SPSN RCBO's throughout, I can PM you details of where I get them from if you want

Why PM him with the details, why not post the details of these SP+N RCBO's here?? Any product or company services that is, or could be beneficial/helpful to the forum members shouldn't be of any problem at all. I take it that you have no financial or other interest in the outlet company??
 
Why PM him with the details, why not post the details of these SP+N RCBO's here?? Any product or company services that is, or could be beneficial/helpful to the forum members shouldn't be of any problem at all. I take it that you have no financial or other interest in the outlet company??

Last time I tried to post details of a supplier who doesn't sponsor the forum it got deleted almost instantly by a mod.

But hey, what teh hell, i'll give it a go and see what happens.
 

Attachments

  • SBS Trade Sales.pdf
    1.4 MB · Views: 27
Are you saying it will only disconnect if there's a L - E fault not N-E fault?

The basic problem is this:

Single pole RCBOs whicha re commonly available only disconnect the live and have a solid neutral.

So lets say a neutral to earth fault occurs on a circuit protected by said RCBO
the RCBO will detect the N-E fault
The RCBO will then disconnect the L
To the untrained eye it appears that all must be ok as whatever fault has occurred the protective device has operated so all must be safe.
Of course the N - E fault is still there and so the diverted neutral currents which could easily exceed the rating of the cable will be flowing through the fault and thus fire could start.


some people will say that this doesn't matter because fuses and MCBs don't disconnect the neutral, but this is not relevant as these devices are not designed to detect or disconnect those faults, they are designed to detect faults in the live. The issue is that you have a device which is designed to detect a fault but then reacts to that fault by disconnecting the undamaged conductor!
 
Last time I tried to post details of a supplier who doesn't sponsor the forum it got deleted almost instantly by a mod.

But hey, what teh hell, i'll give it a go and see what happens.

By all accounts this is a specialist supplier, that also only services tradesmen and companies and not the general public, so shouldn't upset any sponsoring suppliers here!!
 
By all accounts this is a specialist supplier, that also only services tradesmen and companies and not the general public, so shouldn't upset any sponsoring suppliers here!!

Not Electrifix by any chance? wouldn't call them a specialist supplier
 
Just like a fuse then. If they are so bad, why do they make them?

Nothing like a fuse,

A fuse detects a fault in the line conductor and then disconnects the line conductor, this disconnecting the fault.

A SP RCBO detects a fault in the neutral conductor and then disconnects the line conductor, this leaving the fault connected whilst giving the uninitiated the impression that a fault has been disconnected.
 
Nothing like a fuse,

A fuse detects a fault in the line conductor and then disconnects the line conductor, this disconnecting the fault.

A SP RCBO detects a fault in the neutral conductor and then disconnects the line conductor, this leaving the fault connected whilst giving the uninitiated the impression that a fault has been disconnected.

knock enough times and someone will eventually hear.
 

Reply to Today's board change in the UK Electrical Forum area at ElectriciansForums.net

Similar Threads

Hi guys. Just wondering what everybody is charging these days for a board change? I've got a customer who wants theirs changed, all of it apart...
Replies
16
Views
4K
Seems to be my month for finding odd bodges by supposed professionals. Installing an external socket in a shed today at a park home (non-mobile...
Replies
23
Views
4K
Metal Contactum board installed 1998 according to the labelling. Unfortunately it has a plastic flap covering the front of the devices. Anyone...
Replies
11
Views
1K
Morning - just a photo for info to show what's out there (as if most don't already know!!!) & to reiterate the ignorance of some householders. A...
Replies
32
Views
5K
(TLDR Version Available - Bottom of the first post) :D Hi people. :) As some of you know I've been playing around with some forum themes /...
Replies
28
Views
4K

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

YOUR Unread Posts

This website was designed, optimised and is hosted by untold.media Operating under the name Untold Media since 2001.
Back
Top