Why do we do it the way we do in the UK?

[LastManOnline]

Do your regs specifically prohibit any joints in a consumer unit then?

Will come back to you on that. Was pulled on it by my inspector. He, s required to state the rules breach when does that

 

[Mikegh]

Maybe he wanted it on the din rail if it wasn't there ?

 

[Dave OCD]

I don't remember ever hearing of this unless it's new

The rule was always there for no joints inside trunking, that would be basic good practice anyway

I'm sure they have the exact same in the uk

Inaccessible joints then have to be maintenance free , I'm sure they have the same in bs7671

Never heard anything bout DBs unless its new

What I mean is - when an old fusebox is replaced with a modern Consumer Unit it's common to find that several of the existing conductors will be too short to reach their new terminals comfortably. So I can't see any issue at all with extending these conductors within the new CU enclosure, anything else would just be an unnecessary waste of time and materials ?

 

[pc1966]

One other change too now I remember , we.were on 4% installation volt drop

We've changed to the UK system of 3 and 5v for lighting and sockets if I'm not mistaken

Realistically 5% for both makes sense now that filament lamps are a thing of the past.

 

[LastManOnline]

Do your regs specifically prohibit any joints in a consumer unit then?

No they don, t. I checked the regs and all the relevant guidance notes and found nothing to back up my (incorrect) understanding that it was prohibited. So I waited for my most recent inspection last week (same guy who instructed me not to do it originally) and asked about the reasons for not using connectors in the CU. Was told that that "was no longer required". Oh well.... Am still going to use my 3 compartment trunking to drop from the ceiling to the DB though. Enjoy the look of it