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.
My little black book is going to have to get bigger soon! I am not lining up Lyle though, he is not doing anything I wouldn't as far as the things he reports here. It is not everyone BTW, it is the bad few. I spoke to an extremely competent NICEIC contractor's Technical Director this morning on a fairly tricky problem, to verify his calculations. He was certainly not the typical QS. I do not wish to appear to be the thought police, simply "concerned" of the UK.
This change-over system needs the neutral pole in my view, the E-N bond needs to be in each of the supplies, be it generator or mains. It's probably a C2 as it could be dangerous with the right circumstances, what are you going to write Lyle?
My little black book is going to have to get bigger soon! I am not lining up Lyle though, he is not doing anything I wouldn't as far as the things he reports here. It is not everyone BTW, it is the bad few. I spoke to an extremely competent NICEIC contractor's Technical Director this morning on a fairly tricky problem, to verify his calculations. He was certainly not the typical QS. I do not wish to appear to be the thought police, simply "concerned" of the UK.
This change-over system needs the neutral pole in my view, the E-N bond needs to be in each of the supplies, be it generator or mains. It's probably a C2 as it could be dangerous with the right circumstances, what are you going to write Lyle?
