Running SWA underground

[synergy power]

I'm running about 20m of 6mm SWA underground, does anyone have the regulations for doing this?

 

[telectrix]

18" deep, surround with sand, warning tape at 12" deep, cable suitable considering load and volt drop, better in ducting if possible.

 

[i=p/u]

ansd attatch a drawing of cable route for future refrence is all i cvan add

 

[yellowvanman]

Here we go again!

Regs doesn't specify a minimum depth except on farms, in caravan sites and marinas! Its a depth you think is suitable to prevent damage.

 

[telectrix]

was thinking of worst scenario, without details of the exact circumstances. obviously, in certain situations, the depth can be less.

 

[i=p/u]

electricians guide to building regs say at least 500mm

 

[synergy power]

Cable route is under a footpath and garden, No heavy use going on above... I was just going to lay the cable about 10-15 inches deep and then lay electrical cable tape above?

 

[i=p/u]

at about 6 inches below surface for tape and your flying

 

[telectrix]

Cable route is under a footpath and garden, No heavy use going on above... I was just going to lay the cable about 10-15 inches deep and then lay electrical cable tape above?

N

under garden.how deep is a spade thrust? i would go with at least 15" with tape at 10" ( thereabouts.). make sure cable is bedded on sand with sand on top, at least 4" top and bottom. you don't want nasty sharp stones piercing the sheath, do you?

 

[Guest112]

teles right definately use sand under and over the cable and the tape of course

 

[needasparks]

Ask the sparks whos making it off would be best. If its underground is outside, if its a new supply also both need registering unless of course this is not from a domestic supply.

 

[SPARTYKUS]

Not sure but i think "double digging" (two spades' depth) is an important consideration in gardens.

 

[Earthstore]

Have you ever hit a cable that some lazy sod has not burried deep enough, because I have..
It was in a garden, and I hit it with a fork, fortunatly I knew what I had hit, but someone else might not have been so lucky.
Oh and the lazy sod was the MEB, and they wanted to charge me for the repair...
It just so happened that my brother worked for the SEB, and he told me what I should do about it.
It does not matter where it is, just bury the thing deep enough...

 

[johnboy6083]

Dont forget to derate the cable too. 0.9 rings a bell, but check chapter 6 of the red OSG (don't know the green one yet)

 

[supasparxs]

electricians guide to building regs say at least 500mm

Telectrixs has never been very good at measuring,
you should see what he says 6" is!!

 

[telectrix]

can't measure in these damned french metric rubbish units. give me feet and inches every time.