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.
Well it had better have an electrode as well, if the intention is to be able run the genset in a fault when the mains supply may be severed, and therefore not providing any earth at all. (if it was only synchronous operation, then you probably could use suppliers earth.)
Does the Irish regs have anything like ESCQR to contend with ? If not it seems a bit silly to declare C2 on one side of the fence and no problem on the other.
however, the fact remains that if this is a site where UK parliament has jurisdiction, it is illegal (but low risk) to bond N and E on the consumers side of the cut-out.
Well it had better have an electrode as well, if the intention is to be able run the genset in a fault when the mains supply may be severed, and therefore not providing any earth at all. (if it was only synchronous operation, then you probably could use suppliers earth.)
Does the Irish regs have anything like ESCQR to contend with ? If not it seems a bit silly to declare C2 on one side of the fence and no problem on the other.
however, the fact remains that if this is a site where UK parliament has jurisdiction, it is illegal (but low risk) to bond N and E on the consumers side of the cut-out.
