Reconnecting supply after a long time

[Landy]

I've been asked to reconnect a supply to a garage cut off 3 years ago. the house is TN-C-S. Will have to put in new swa as no supply. The garage has an old metal DB with one rcd and 3 mcbs to lights, sockets and wall mounted electric heaters. insp certificate dated 2003, nice. So would i be correct in assuming the old mcbs are fine and if the museum rcd operates in the required time thats fine too.

How do i stand on reconnecting a supply that's been disconnected for so long, do i have to bring everything up to 17th edition (i have to lay new swa as no supply present)

Also the metal sockets and light switches have no earthing.

I told the customer I would have to put in new DB with RCBOs, install earth rod and put an earth through the existing conduit to all accessories.

Is that an overkill, can i just connect the supply and walk away whistling

 

[Andy™]

Is that an overkill, can i just connect the supply and walk away whistling

well, yes. but then you would also be classed as a cowboy....

you should convert it to TT and install a rod. also, if you do make it TT, you cannot have a metallic enclosure unless the feed already goes through and external RCD (and this will have to be plastic case)

 

[Lee321]

export if its a short distance

 

[Andy™]

[quote name='Lee

 

[Lee321]

[quote name='Andy

 

[ProDave]

Also the metal sockets and light switches have no earthing.

Well that needs sorting out first doesn't it.

Rather than mess about running a separate earth, you might as well rewire it. After all, it's only a garage and will almost certainly be surface or conduit wiring so a rewire is simple.

And if you are rewiring, a new cheap

 

[Landy]

Thanks guys, customer was quite pressurising to just connect it up, the blighter.

The garage is a long way behind the house so an earth rod is best me thinks.

Really nice to have somewhere to come to keep me on the straight and narrow.

Sometimes it's a little tempting to let them fry, says the little red chap with a fork sat on my shoulder....

 

[a1]

LOL Landy. :^O

 

[Andy™]

Sometimes it's a little tempting to let them fry, says the little red chap with a fork sat on my shoulder....

would be nice, but im sure someone will complain

 

[NozSpark]

All you have to remember is that all your work has to comply with the current regs.

so you could run a new sub main and TT at the garage and RCD the circuits, may be worth rewiring the garage if ther is no CPC; but you say that it's in conduit, could that be being used as the CPC?? If that is the case and all is in good condition and operating correctly then you may only have to run the new sub main?