R
radiohead
Currently doing an EICR, query concerns a distribution circuit to a pool plant room around 200m from the intake. Supply is TNS and a TPN SWA is fed from a 63a type D underground to the pool plant. At the plant room the SWA is terminated into plastic trunking with a separated TT system taking over. Issue is that the measured Zs on the armouring exceeds the max for the OCPD,(by some way), and hence the 5s disconnection time is not met (for the sub). Now normally such an issue would get a code 2, but given that nowhere is the gland or armouring accessible without actually removing the shroud would a code 3 be appropriate?
Changing to a type C would remain over, and although a type B would get over it, with two heat pumps amongst other high inrush gear it would not be practical. Only solution would seem to be a time delay RCD at source, but there is nowhere to put one. I'll have to sort it and a code 3 means it wont need sorting!! Opinions welcomed.
Changing to a type C would remain over, and although a type B would get over it, with two heat pumps amongst other high inrush gear it would not be practical. Only solution would seem to be a time delay RCD at source, but there is nowhere to put one. I'll have to sort it and a code 3 means it wont need sorting!! Opinions welcomed.