Are there really so many circuits that are unknown, or are they really 'not used' and blanked off. ? If there are other issues with the unit, such as mechanical damage or evidence of overloading etc, that would be a different matter. MK Sentry RCD 63A H7860S. For use within MK Sentry Consumer Units. Providing a 2 pole, 2 module format.

As described it seems an odd recommendation. Without knowing more about the inspector and what exactly was done, if the only problem was that RCD does not trip off when it should, then changing it would be cost effective and sensible, if the spare part is still available. There are some geographical areas that we are unable to offer next day delivery as standard, such as the Scottish Highlands. We are unable to guarantee next day delivery to the following post codes AB31, AB33-38, AB44-56, IV, HS, KA27-28, KW, PA20-88, PH17-26, PH30-44, PH49-50, TR21-25 and ZE. days. We endeavour to keep you updated on your delivery, however, please be advised that this might just be a named day service within normal working hours. Suitable for the connection of 1 x 1.5-35mm² solid cable and 1 x 1.5-35mm² Flexible Cable with female. Features of MK Sentry H7860S: So those who have seen my previous post know that I now own a Megger MFT 1730 what has recently been calibrated and that I was also experiencing higher than permitted Zs for my kitchen circuit what is protected by a 32A Type B MCB.We are unable to deliver to the Isle of Scilly, Jersey, Guernsey, Northern Ireland, Isle of Man and the rest of Europe. Ze is 0.16Ω (Measured at CU using 2-Wire high current setting with main pipe bonding disconnected.)