Metal capping outside the 150

[p11jor]

Hi all just thinking when doing a rewire and running the cables down into the meter cupboard then these are never within the 150mm from edge, tomorow I am going to put metal capping over these, how do I connect a earth to this steel? Should I just run a 4mm from the earth block below?

 

[Deleted member 26818]

Isn't it in the regs though if your cable is not 150 from the edges or running inline with sockets and switches horizontal or vertical then steel earthed protection must be used?

I will have to check when I get my regs out.

NO. The requirement is to install at a deapth greater than 50mm,
or use a cable which incorporates an earthed metallic sheath,
or earthed conduit or trunking,
or provide mechanical protection sufficient to prevent penetration of the cable by nails and screws.
or to route the cable in a safe zone and provide RCD protection.
There is no specific mention of earthed protection.

 

[Big n Daft]

Why is this so complicated.
Read the On Site Guide.
I must be missing summat.

 

[1shortcircuit]

As SPARTYKUS states then. Follow the designated zones as in VERTICAL and HORIZONTAL of the CCU.

 

[Paul.M]

And as Spinlondon has said if cable is less than 50mm it needs rcd protection, if not rcd it needs mechanical protection, simples. Osg page 21-22 off the top of my head .

Also if clipped direct/visible no need to do anything.

 

[Octopus]

If you're doing a rewire, you'll be fitting a dual RCD board or all RCBO's, so the cables will have protection!

 

[telectrix]

if all cables are directly above the CU, then no problem.

 

[SirKit Breaker]

I am talking them being plastered over?

Same rules apply mate. It doesn't matter where the CU is, it is still treated as an Electrical fitting, so your'e cables are in zone if they are vertical or horizontal from it.

Cheers.........Howard