new ligthting no earth

[long512]

new to domestic trade,

got a couple of small job offers for starters, went for a look today but the client wants new wall lights fitted and new ceiling fitting put up.
trouble is old wylex 3036 board, is other side of farm house thats been re decorated throughtout and theres no earth for lighting.
looking in the regs i cant find a reason why i cant, but wanted to know if it would be frowned upon to fit a surface mounted rcd spur of the sockets to accomadate no earth
and provide protection for new cables??

any advice/ideas cheers!

 

[lauriehurman]

Well Glen my thinking is that upgrading to 1361 increases the current capacity of the cables and takes the fault current capability from a few hundred amps (can't remember the actual figure) to 16thousand amps.
Surely the best £7.50 they can spend?
Laurie

laurie....
if the circuit meets disconnection times (Zpn) for BS3036s then it wouldn`t be a priority...would it.....
the person ordering the work is better spending money getting a CPC made available....

 

[telectrix]

Good luck
The 1361s cost about £7.50 each. The plug-in MCBs cost over £20 each. You also can't get the outer cover back on over the MCBs.

Laurie

plug-in 60898 for wylex about £10, and the fuse cover can be cut to accomodate the MCBs ( carefully or it will shatter)

 

[Hawk81]

Well Glen my thinking is that upgrading to 1361 increases the current capacity of the cables and takes the fault current capability from a few hundred amps (can't remember the actual figure) to 16thousand amps.
Surely the best £7.50 they can spend?
Laurie

what???????? This is the biggest load of rubbish I have read in ages. Changing the fuse increases the current capability of the cable????? Ha ha. And a fault capacity of 16,000 amps. Where did you get all this info. Don't give answers to people if you are writing pure and utter tripe!

 

[lauriehurman]

Thanks Hawk

You'll find all you need in chapter 43.
Can't remember where the safe rupture current is written.

Laurie

 

[DJ Ovengloves]

For the first part I think he's talking about not having to worry about the rating factor of 0.725 for 3036 fuses in regards to protective device selection (433.1.101).

what???????? This is the biggest load of rubbish I have read in ages. Changing the fuse increases the current capability of the cable????? Ha ha. And a fault capacity of 16,000 amps. Where did you get all this info. Don't give answers to people if you are writing pure and utter tripe!

 

[Hawk81]

My mistake then. Reading without being properly awake. Apologies.

 

[GLENNSPARK]

Well Glen my thinking is that upgrading to 1361 increases the current capacity of the cables and takes the fault current capability from a few hundred amps (can't remember the actual figure) to 16thousand amps.
Surely the best £7.50 they can spend?
Laurie

well for a start wouldn`t BSEN60898s be the ones you mean

?????since when has 1, 2 or 4 KA been a `few hundred amps?.....

to the O/P...get a PFC on this