Buried cables regulations

fritzelly

Whats the regs on buried electrical cable?

I've chased about 5 cm deep - and knackered so don't wanna have to go deeper if I don't have to

Found some British regs but are they the same as Ireland

Basically is it deep enough or will I need a conduit and should it be plastic or metal?

Leftyflip

Chased into a wall? Or dug into the ground?

Frankx

There's a few

Generally cables go horizontally or vertically to a switch etc

And they should be at least 50mm back from the other side of a wall

There's a few more but mostly you will stick to the standard runs above

Frankx

If youre dropping to a socket etc you only need plastic

You actually don't want to go in to deep if it's a thin wall as you might be out too far towards the other side

listermint

fritzelly wrote: »

Whats the regs on buried electrical cable?

I've chased about 5 cm deep - and knackered so don't wanna have to go deeper if I don't have to

Found some British regs but are they the same as Ireland

Basically is it deep enough or will I need a conduit and should it be plastic or metal?

It should be in conduit and min 750mm.


What are you installing?

Frankx

450mm for SWA buried in a domestic garden or driveway

Lumen

listermint wrote: »

It should be in conduit and min 750mm.

I assume since he got knackered by going 5cm deep it's not in his garden.

Lumen

Frankx wrote: »

450mm for SWA buried in a domestic garden or driveway

I believe ET101 states, from bottom to top:

- 100mm sifted soil or sand
- SWA
- 150mm sifted soil or sand
and then 450mm comprising:
- Cable tile
- Warning tape
- Backfill

So effectively you have to start by digging a trench of depth 700mm+cable diameter.

But this isn't what the OP was about.

Frankx

Lumen wrote: »

I believe ET101 states, from bottom to top:

- 100mm sifted soil or sand
- SWA
- 150mm sifted soil or sand
and then 450mm comprising:
- Cable tile
- Warning tape
- Backfill

So effectively you have to start by digging a trench of depth 700mm+cable diameter.

But this isn't what the OP was about.

I'd say he's on about a wall chase

fritzelly

Sorry, its in a wall for a light switch

listermint

If your 5cm deep your half though the block. Too deep

fritzelly

Block is about 120mm, I'm probably more 40 mm than 50

chooseusername

fritzelly wrote: »

Block is about 120mm, I'm probably more 40 mm than 50

I think it's something like 1/3 of block thickness for vertical chase,
so about 35mm.
and half that for horizontal chase.

Calahonda52

522.6.4 :4th edition 2008 the distance measured horizontally between the wring and the reverse side of the wall is not less than 50 mm

+all the stuff about horz and vertical distances

tech

500mm would be best


cover with some gravel and then some yellow warning tape incase someone comes digging in years to come

Lumen

This thread is like a reading comprehension test.

fritzelly

All done and I didn't kill myself
Looking pretty good with new wallpaper and new switches