Hi Topspark ,
why do you keep telling people to TT their supplies to sheds & garages?
It is NOT mandatory, merely one way to do it! Ericmark gave an article about this for you on another post.
Please tell me which reg says you have to do it this way as both NAPIT & ECA have published info saying this is not the prefered way, it is only needed if there is a metal service to the out building , otherwise we should use the house earth.
I know it was way back in FEB. when I passed my 17th & I been in Leckie business since 1963 so @ 60+ the memory ain't great, but I don't think I am wrong on this, I await correction though, BTW who are you registered with?
regards SPARX