Seperate test sheet for garage consumer unit on a TT system

[Tauruselec]

Hi Guys, hopefully someone will know the answer. Testing an install on a (domestic) PME system I have a garage consumer unit supplied from one of the RCBO's
I have installed an earth rod to supply the earth and not connected the CPC or armouring to the garage consumer unit end.
My question is when it comes down to test sheets I need to take a Ze at the garage board but on the NAPIT test sheets if I add a other DB to the installation it does not give me an option for another Ze.
I could obviously do another test sheet but it's another payment to master the copy etc and seems pointless.
It's asked if the dB is connected to the origin of the supply which technically its not so a Zdb test could be carried out but then the earthing arrangement would be different so I would need somewhere to note that down surely? Appreciate any help in advanced.

Cheers

 

[Flanders]

New domestic install everything is required or recommended to be protected with an RCBO. They are cheap enough so why wouldn't you?

Also it's stated that a seperate earth would need to be run to any exposed metal parts of the garage and taken back to the origin in the house if no earth rod is provided within a meter of the garage...
I thought Any outbuildings more than 1meter of the dwelling need a separate earth to comply with current regs?

not all circuit in domestic have to rcd protected. Although they are finding more and more reasons to stop mcbs being used. Ok if the the metal work is an extraneous conductive part than it will been to TT or you can connect to the MET via a bonding conductor. I've do not know of the reg regarding any building being more than a meter away needs to have a separate earth. Can you point to the reg for this. ?

 

[mainline]

I've do not know of the reg regarding any building being more than a meter away needs to have a separate earth. Can you point to the reg for this. ?

Read post #15

 

[Flanders]

Read post #15

Thanks Yes I read this after I had posted did not think it was a regulation