2.5mm on 32A MCB

[kingeri]

Just wondering what folks would do if you came across this on your travels. 4mm radial sockets circuit, on 32A MCB. Two branches from the CU, one supplying 6 double sockets, wired entirely in 4mm, so fine. The other branch consists of a 1m run of 4mm to a double socket, then around 5m in 2.5mm cable on to a second double socket.

The question is, who would be happy to leave this arrangement in place, and who would downgrade the breaker to 20A? I would say it's ok, as the 2.5mm can't be overloaded as it feeds only one double socket, just like an infused spur off a ring.

 

[sparksburnout]

Wasn't there a thread a few weeks ago that concluded that a 4mm radial protected by a 32A OCPD was not good practice anyway, just to throw a bit more fuel on the fire?

 

[westward10]

Things can happen, no doubt. But it is very unlikely that during normal use in a domestic property that the socket in question would be overloaded. If some idiot decided to extend off that socket then that's their responsibility. No one can foresee all events.
Like I said non of us would install the socket in this manner, and yes in exceptional circumstance there could be a chance it gets overloaded. As I said I would asses the install, make a note on the report and then perhaps code it accordingly if I felt it was going to be a potential problem.

Its easy to fall into the nanny state mentality, stifled by bureaucracy. This doesn't mean ignoring potential hazards, but rather accessing the situations to determine the severity. But we cannot wrap people up in cotton wool, they have to take some responsibility for their own welfare.

I doubt any thing will happen, three of my kitchen sockets are a spur from the ring final, done by the previous owner. Will be put right one day when kitchen is altered, has all sorts plugged into it without a problem.

 

[rich bevan]

Sorry lads my bad. Miscread the op. Cheers for clearing that up

 

[GMES]

Wasn't there a thread a few weeks ago that concluded that a 4mm radial protected by a 32A OCPD was not good practice anyway, just to throw a bit more fuel on the fire?

Was it this one Sparks:
http://www.electriciansforums.co.uk/posts/1228200/

 

[sparksburnout]

Was it this one Sparks:
http://www.electriciansforums.co.uk/posts/1228200/

Nnnnot sure, don't think so. Might have a look later but I just started on the G&T's so then again i might not.
I have vowed to keep off here when i have had a few wets.

 

[kingeri]

Nnnnot sure, don't think so. Might have a look later but I just started on the G&T's so then again i might not.
I have vowed to keep off here when i have had a few wets.

Any luck finding that thread? I want to read it!

 

[sparksburnout]

Any luck finding that thread? I want to read it!

Here it is dude, look who started it!
Domestic - 4mm 32a Radial In Trunking - http://www.electriciansforums.co.uk/threads/4mm-32a-radial-in-trunking.112797/

 

[kingeri]

Here it is dude, look who started it!
Domestic - 4mm 32a Radial In Trunking - http://www.electriciansforums.co.uk/threads/4mm-32a-radial-in-trunking.112797/

Thanks man. How ironic, it was my thread. Seems I have a fetish for all things 4mm^2!

 

[GMES]

Daft Sod^^^^^