Can I ask your opinion in relation to neutral /earth on this rather untidy changeover arrangement located just downstream of the main isolator? There are 2no 3-pole contractors with mains in bottom left and generator in bottom right. On the stud adjacent they have connected gen neutral, DNO neutral and installation earth. The arrangement means a self-imposed conversion to an unauthorised TNCS. I can’t be sure if the existing supply is already TNCS.
If I spat out the door of the intake room it would land in the Republic of Ireland. There, it is the contractors responsibility to ensure that the installation is effectively “neutralised”, ie the main protective conductor is connected to the supply neutral. This can be done in the main panel for larger installations. Almost all of Ireland is TNCS so where a supply is made available the neutral is used as earth. I have seen the arrangement several times both north and south of the border all by the same genny specialist who is based in the south.
If I spat out the door of the intake room it would land in the Republic of Ireland. There, it is the contractors responsibility to ensure that the installation is effectively “neutralised”, ie the main protective conductor is connected to the supply neutral. This can be done in the main panel for larger installations. Almost all of Ireland is TNCS so where a supply is made available the neutral is used as earth. I have seen the arrangement several times both north and south of the border all by the same genny specialist who is based in the south.
