wiring double sockets in flex

[marty1234]

i was at a job today and a company are going round a chain off shops fitting 2 double sockets for a new computer system they are wiring these sockets off exsisting sockets (2.5 cable radials) .the new sockets thay are fitting is wired in 1.5 flex what do you think. i have not came across one test cert on any off these jobs yet

 

[heathelect]

thats naughty, these cowboys should be reported!!

 

[marty1234]

yes mate these guys are fitting hudreds off these in this chain off shops i was doing pir inspection in one tonight and i came across this it was just fitted last week

 

[sivoodoo]

whats the shop so i can avoid going in there

does not sound right to me and I dont know much!

 

[greekislandlover]

Well, they are storing up problems for the future. IT systems have a high earth leakage current, and can require special considerations if there are lots of computers. I think there is a section in the regs, GN3 or the OSG. We were certainly told about this in college.

I don't think wiring in flex is the answer either!

 

[4x4 mark]

not ok if its just tapped off the back of the socket but if you take it from the switched side of a spur with a 5amp fuse then you should be ok. see page362 app 15.

i stand ready to be corrected

 

[marty1234]

4*4 the sockets are wired right out the back off the sockets

 

[dragon-av]

not ok if its just tapped off the back of the socket but if you take it from the switched side of a spur with a 5amp fuse then you should be ok. see page362 app 15.

i stand ready to be corrected

I think the spurs still needs to be T+E from socket this is what we do with projectors and screens (normally we go to flex outlet from the spur and flex from outlet to appliance.

 

[montybaber]

Regarding using flex...if the current carrying capacity is adequate (which im sure flex is higher than twin and earth) then why is it such a crime (prepares to get flamed).

Although agreed its bad practice and not the norm

 

[EasyFox]

Ok and a trailing lead that can be commonly found in most offices/homes, has a cable of what csa ?......yes thats right 1.5mm ...so long as the plug has a 13a or less fuse it's good to use.
If memory serves me right isnt 1.5mm rated upto 16amp?

I agree they shouldnt be spuring straight off a socket, but if a fcu is used all will be ok.

Having said that if the circuit is a radial & fused at 16amp via a 60898 or 61009 & flex is surface mounted/ clipped direct they may be ok........wouldnt do it that way myself but heyho if the calcs work out why not.

 

[wattsup]

So wiring a ring main in 2.5 3-core butyl flex is bad practice?
If its 2.5 its perfectly ok. In fact the spec is better than pvc flat t&e.

Is it ok to wire a ring main in 1.5 micc, or maybe 2.5 fire-tough. Or can ring mains be only wired in flat pvc cheapo t&e ?
It is no wonder house bashers get bad press -