pls help-can some one please tell minimum requirements for burying cable in wall-than

mumofjusttwo

Hello. i think that the title says it all.

Wonder what safety measure are required and what additional safety measure would be suggested.

You can never be too careful

THanks again!

BillTrac

Safest way is to chase the wall out deeper than the cable, buy some plastic shielding or oval tubing(can't remember what is't called..duh!) and plaster over. If you want to have the option to rewire at any time use plastic conduit. Means a deeper chase though.

And also best way is horizontal or vertical runs NOT diagionally

mumofjusttwo

Could you please tell me if there is a minimum requirement as I don't think that the builder I have is very good and want to clarify if he is taken short cut.

I will not have short cuts with my life!!

zax47

Edited: Mumofjusttwo is just asking for info.

There are no minimum depth requirements in the BS7671:2008 17th Edition wiring regulations BUT any newly installed cable/circuit not buried AT LEAST 50mm in the wall must either be protected by an RCD device or have "mechanical protection" - usually by means of earthed metal conduit (plastic "capping" is NOT mechanical protection for this purpose - it's to protect against plastering damage!).

Cables must also be installed in "safe zones", check here for some handy info;

Correct and safe cable routing

mumofjusttwo

It isn't me doing this but the person doing my kitchen!!

zax47

mumofjusttwo wrote: »

Could you please tell me if there is a minimum requirement as I don't think that the builder I have is very good and want to clarify if he is taken short cut.

I will not have short cuts with my life!!

As I said above, there is no minimum requirement - provided the new cables/circuits are protected by RCD back at your consumer unit ("fuse box") and are run in the "safe zones". Anything newly installed since July last year has to be to the current 17th edition wiring regulations and this is intrinsic to them.

If you are in any way concerned about the job, ask who is the qualified electrician doing/overseeing this job and which Part P scheme provider is he registered with?

zax47

BillTrac wrote: »

And also best way is horizontal or vertical runs NOT diagionally

Bill, the ONLY way is to have horizontal and vertical runs, and within the safe zones. Diagonal runs are not really permitted at all and we were taught (many years ago) to avoid them at all costs, so no "proper" electrician would even consider it.

See the link in my post above.

withabix

There IS a minimum requirement: The work must ALL be done or certified by a qualified electrician, not a 'builder'.

zax47

withabix wrote: »

There IS a minimum requirement: The work must ALL be done or certified by a qualified electrician, not a 'builder'.

Not quite, a "builder" who is a trained and certified member of a Part P "competent persons" registration scheme is just fine! Many plumbers and builders undergo "Part P" training courses to be able to install, test and certify electrical installations in the Part P "Special Locations" of kitchens and bathrooms. This is known as "defined scope" certification within Part P and perfectly valid.

mumofjusttwo

:eek:I didn't know this.

Guess I better get an electrician.


thanks for your help. I really appreciate it.

Cknocker

Part P of the building regs lays down minimum requirements, its hard to describe as there are different zones.

With regards to chases remember that the chase should not be deeper than a 1/3 of the skin thickness (Approx 35mm normally).

The cable should always be run in conduit, either metal or plastic.

Cables should not run diagonally.