electrics

[harry_the_dog]

don't be so negative ban all sheds.
It wouldn't hurt to leave 2 cable runs in there if I was going to wire it up to the ring.

 

[ban-all-sheds]

Sorry - certainly didn't mean to be negative . But you're right - I was exaggerating the problem, or not thinking it thru. I was looking at it fom the viewpoint of converting your double-cabled radial into a ring, rather than simply adding a return leg from the last socket, and there's no reason at all why you can't leave that run of 2 x 2.5mm in place for part of your ring.

OOI - how easy/hard was it to get 4 x 2.5mm conductors into each socket terminal, and how many beers does your advisor now owe you?

 

[harry_the_dog]

eh no probs.
Yeah 2 cables through each hole in the socket mounting, not too bad.
as for 4 wires into the socket terminals that has yet to be done, I was kinda curious about that myself. I'll let you know.

P.s. I requested compensatory beers from my friend (he told me to get lost!)

 

[ban-all-sheds]

Err - hang on - 2 cables into each terminal is what you have when there's a single cable used, be it a ring or a radial, i.e. one coming in from the previous socket and one going out to the next socket.

If you have already wired up your radial with 2 x 2.5mm cables, then you must already have 4 conductors in each terminal - 2 coming in from the previous socket and 2 going out to the next socket...

 

[harry_the_dog]

Yeah I have.

2 in 2 out = 4 cables in each.

I'm going to connect the socket fronts tonight. (I hope)

 

[ban-all-sheds]

Yeah I have.

2 in 2 out = 4 cables in each.

Sorry - I was temporarily confused when after having posted these:

Going back to what paul said rearlier, if i had a spur off a spur and doubled up on the cable. ie 2 X 2.5 mm cable then i can still draw up to 48 amps safley from those two spurs

... Obviously the main fuse would blow first but the point I am making is that by doubling up on the cable i am safe because the capacity of the cable is then greater than the main 30amp fuse in the consumer unit.

... i wired it up like this having been advised to do so buy a friend.

you then said.

...as for 4 wires into the socket terminals that has yet to be done..

Hope you understand.

 

[harry_the_dog]

Yep sorry, when i said 'wired it up like this' i meant lay the cables. I still have the cables sticking out of the socket backs waiting to be connected up.

 

[ban-all-sheds]

Ah - now it all makes sense.

But if you've got two lengths of cable running from one box to the next, can't you just replace one of them with an uninterrupted one returning from the last socket back to where you are connecting into the ring?

Or join one set with crimps to make the return leg?

 

[mildmanneredjanitor]

Hello everybody!

tis my first post and couldn't resist joining in as no-one has yet mentioned that seeing as the loft is on a separate floor, surely it would be better practice to have an independent ring wired back to the consumer unit???

Any problems encountered in the future can be isolated to the building level which has the fault...

Not forgetting the lighting circuit too.

Also, the point made by someone was a ring pretty much guarantees continuity of the earth circuit - no single point of failure, which is the most valid point. IMHO

I shall finish on a question...

For bonding purposes, if it is not practicle to run an earth cable from the gas meter box (within 500mm I believe?) is it acceptable to fit another earth spike, or does it all have to be cross bonded to the original earth circuit???

Thanks to all!

 

[breezer]

for bonding purposes the "rule" is "ignored"