Meter tails and capping

[magnoliafan89]

Hi guys came across meter tails buried less than 50mm no rcd protection but did have some red capping over and they are in prescribed zone about a meter between main fuse and consumer unit.

TNS system.

C2 or no code??

 

[Andy78]

Depends what the red capping is. If it affords protection to comply with 522.6.204 (iv) then no code.
I would usually apply C3 to cables buried less than 50mm with no RCD for additional protection.

 

[magnoliafan89]

See I was going over that reg but it's not earthed metallic covering. But even metallic capping...I've gone straight through with an sds very easily....

 

[telectrix]

definitely requires a code.C3 or even a C2 if you think some numpty might nail or screw.

 

[Andy78]

A section that resists penetration (3mm steel is usually considered adequate) does not have to be earthed for that reg. Normal capping would not be suitable.

If using something else i think it has the be conduit or trunking to BS standards and earthed.

 

[davesparks]

Is the red capping steel or plastic?

We used to use 3mm thick steel plate over buried tails, this came from the steel supplier with a red oxide coating the same as RSJs do. So it could be that the red capping is a red oxide coated steel plate

 

[magnoliafan89]

It was plastic. I coded it a c2 in the end.

 

[Dustydazzler]

Is it just me , but I dislike meter tails being buried in the plaster...

 

[MJPD29]

Is it just me , but I dislike meter tails being buried in the plaster...

Also something I would not do.

 

[Phil Thompson]

Years ago as an apprentice, we put tails into 20mm steel conduit when buried in the plaster. So 3 tracks and 3 pipes. Boards where below the staircase, dunno why my boss never asked the builders for the pirmelli box to be located level with the area the Fusebox was installed.