Mechanical protection/ Safe zones

[sparrrrk]

Hi all,

Just after a bit of advice from all you domestic installers out there.

I've been asked to do a job in a house which involves running a cable in a wall. The cable needs to run vertical the entire height of the wall. However I cannot run it where the walls meet at an angle due to obstructions. This wall is at the base of stairs so quite small.

Can I utilise the thermostate as an acessory and run behind it (obviously taking it off wall and mounting back on after filled) to fullfill the requirementof running to an accessory. Or is this not allowed as it isn't actually supplying the accessory.

If not can I just cap the cable with metal capping at least 3mm thick. I know meeting the requirement to prevent nail penetration is hard to meet.

The circuit is covered by a 30ma rcd. Just a little confused as my domestic regs knowledge is not up to scratch. Don't want to install a cable unsafeley.

Any advice would be appreciated. Thanks

 

[telectrix]

the thermostat is an accessory and assuming it has a LV supply, then it can serve as a pointer for a prescribed zone. won't do if it's a wireless stast.

 

[sparrrrk]

It's definitely Lv. There's surface trunking supplying it. Was even thinking I could bury these supply cables as well If pos. Get rid of the unsightly trunking. What do ya think?

 

[telectrix]

go for it. but remenber thst buried cables need RCD protection.

 

[Leesparkykent]

What's the cable for? LSX cable could be an option.

 

[gnselectricals]

Or bury some steel conduit for a lovely job, don't forget to earth it tho

 

[Deleted member 26818]

Mechanical protection is not required to be earthed.

 

[davesparks]

Mechanical protection is not required to be earthed.

That's a rather sweeping generalisation! There's plenty of times when mechanical protection is required to be earthed and occasionally bonded

 

[Deleted member 26818]

There is no requirement in BS7671 for mechanical protection to be earthed.
So not a sweeping generalisation, a simple statement of fact.

 

[infinity]

Only earthed mechanical protection needs to be earthed