RCBO Replacement under 18th Edition

[Baga Bones]

Hi,
Complete laymen to the electrical world so need some advice.
We had a complete rewire done in 2016 and as part of this we had an RCBO unit put in. Today we have had an issue where there has been a loose connection and the board needs replacing. This is being done under our house cover but the electrician has advised we won't be having the same sort of board as the 18th edition rules have improved the requirement and therefore we will be having something better that includes mcbs. I don't have a clue about any of this so wanted some advice as to what is correct and what I should be pushing for. I've included a couple of pics of the board if thats any help.
Thanks.
View attachment 44534

 

[Ian1981]

I just did that in #22

Yes but you just wanted to upset Murdoch

 

[Ian1981]

I just did that in #22

Yes but you just wanted to upset Murdoch

 

[Deleted member 26818]

I must have slipped through time or something.
For me the 18th doesn’t start for another 3 months.

 

[Ian1981]

You can design and install to the 18th if you wish now

 

[Pete999]

What 5 warranty is that?

To add can't really apply warranty to ----poor workmanship, can you??

Yes but you just wanted to upset Murdoch

Not to difficult a task.

 

[Dave OCD]

On a slight tangent, I know it's considered good or accepted practice to put your circuits in order of load/OCPD rating from the main switch but with RCBO boards I like mixing them up to avoid build up of heat in one area.

 

[telectrix]

On a slight tangent, I know it's considered good or accepted practice to put your circuits in order of load/OCPD rating from the main switch but with RCBO boards I like mixing them up to avoid build up of heat in one area.

itusedto be back in the days when old busbars preferred the heavier loads closer to the main switch, but not been considered good practice since pete999 got out of nappies

 

[Strima]

On a slight tangent, I know it's considered good or accepted practice to put your circuits in order of load/OCPD rating from the main switch but with RCBO boards I like mixing them up to avoid build up of heat in one area.

A lot of manufacturers recommend mixing light and heavy loads along the boards to avoid mutual heating and magnetic effects.

 

[Pete999]

itusedto be back in the days when old busbars preferred the heavier loads closer to the main switch, but not been considered good practice since pete999 got out of nappies

Can't remember that far back Tel

 

[Dave OCD]

And yet the board which is the subject of this very thread has all the big stuff first and together, may have been a contributory factor to the molten mess.

 

[Dave OCD]

A lot of manufacturers recommend mixing light and heavy loads along the boards to avoid mutual heating and magnetic effects.

And there's even a tick box in the schedule of inspections for this....

 

[westward10]

And there's even a tick box in the schedule of inspections for this....

Which one, can't be bothered to look.

 

[Dave OCD]

Which one, can't be bothered to look.

I can't be bothered either this time of day but it's in the Consumer Units part of the schedule [EIC and EICR I think], of course it could refer to other things too, such as not not having a single live conductor through a metal hole.

 

[Toneyz]

itusedto be back in the days when old busbars preferred the heavier loads closer to the main switch, but not been considered good practice since pete999 got out of nappies

What! that long ago!!!!!!!!!!!!

 

[Octopus]

Actually the 18th edition mentions that one or more circuits can be protected by a common rcd subject to other applicable regulations such as this new 30% value of the rcd for earth leakage to the shared circuits on the same rcd

I’ve long pondered how we are supposed to calculate this , and how anyone could say a new install doesn’t comply ........is anyone’s guess