Detached garage

[Sintra]

As I see it the correct word in this situation would be EXTEND rather than EXPORT.

 

[Engineer54]

As it's a separate building and with a PME service at the head, you will need the separate 10mm bonding conductor between the MET and garage EMT in this garage to connect to the steel frame and to the daft copper heating pipes etc, if your intending on extending the house PME equipotential zone!! What sort of distances are we talking about here??

 

[diditrain]

The detached garage is no more than 5 metre`s from the house.

 

[telectrix]

if the 6mm SWA is already in place and a 10mm bonding conductor would be a pain to fit, then TT the garage. bloody big rod and the steelwork should give a decent Ra. LOL.

 

[diditrain]

Yeah it`s already in situ, beneath a block paved yard. His garage is still under construction but he is putting insulated plasterboard on the walls, tinted windows etc. Should be nice and snug when complete

 

[telectrix]

Yeah it`s already in situ, beneath a block paved yard. His garage is still under construction but he is putting insulated plasterboard on the walls, tinted windows etc. Should be nice and snug when complete

a good argument for putting the cable in ducting. could have pulled a 10mm bonding in retrospectively. now he's fooked.

 

[diditrain]

Totally agree, I will probably just tell him to run one in himself. Give him the hassle

 

[Engineer54]

Yeah it`s already in situ, beneath a block paved yard. His garage is still under construction but he is putting insulated plasterboard on the walls, tinted windows etc. Should be nice and snug when complete

Sounds more like a very comfortable naughty boy's room, where your mate goes for a beer and to watch the footie in peace!! lol!!

 

[diditrain]

Yeah, i believe it is his place to go and hide. Then again they say that every man should have one

 

[Guest55]

Think you will find you can't export the earth from the main building as it TN-C-S

..........

 

[diditrain]

Hi telectrix, if i was to TT the garage, there would still be a path back into the house via the bonded central heating pipework.

 

[Engineer54]

The detached garage is no more than 5 metre`s from the house.

No problem then!! Should of asked you to advise in the first place, ...that or run the existing cable in a duct as Tel suggested!! lol!! Try conducting a sheath test on that cable your mate has installed, ...what's the betting it fails?? lol!!

 

[diditrain]

Yes, that could be interesting, to say the least.
Am i right in saying that the copper equivalent for the armoured is 7.39?

 

[Guitarist]

Hi telectrix, if i was to TT the garage, there would still be a path back into the house via the bonded central heating pipework.

Because of this, it is unlikely that you will be able to isolate the garage from the house (unless plastic is used in the pipework). 10mm bonding cable is the way to go imo.
To put your mind at rest, why not speak to your scheme provider

 

[Engineer54]

Yes, that could be interesting, to say the least.
Am i right in saying that the copper equivalent for the armoured is 7.39?

Let's put it in these terms, ...there is no way the existing 6mm SWA cables armour is going to provide your bonding requirements, so it's either changing existing cable for a 3 core 10mm SWA, (whose armour Still wouldn't comply for bonding purposes) or run in a separate 10mm bonding conductor!! lol!!

Steel requires about approx 8 times the CSA of a complying copper conductor, for it to be equivalent/suitable for bonding purposes!!

 

[diditrain]

Thank`s for all of the replies guys, been very informative.