Morning @kezo Many thanks for all the information, some of which I understood
I’m going to contact my local electrician tomorrow and ask him to call around and answer the following questions; 1) Are the two consumer units supplied from a split cable from one set of incoming tails? 2) Does the consumer box in the extension have 25mm2 tails supplying it? Cost to achieve this if not. 3) Is the garage supply coming via an MCB (fuse) from one of the consumer units? 4) Is the garage electrical supply 10mm2 cable (or even 6mm2 cables)? Does that cover everything? Final question, I didn’t understand the point about they could refuse an install if the cur-out fuse needs to be upgraded to 80A or 100A. Is that a big / complicated job? Cheers.
I’m going to contact my local electrician tomorrow and ask him to call around and answer the following questions; 1) Are the two consumer units supplied from a split cable from one set of incoming tails? 2) Does the consumer box in the extension have 25mm2 tails supplying it? Cost to achieve this if not. 3) Is the garage supply coming via an MCB (fuse) from one of the consumer units? 4) Is the garage electrical supply 10mm2 cable (or even 6mm2 cables)? Does that cover everything? Final question, I didn’t understand the point about they could refuse an install if the cur-out fuse needs to be upgraded to 80A or 100A. Is that a big / complicated job? Cheers.Yes mate that covers basically everything.
Upgrading the cut-out fuse is not a big job, requires the DNO fuse changing in the meter box only. If you look at the black service head below the meter and to the left of the off white wylex fuse box you can see where the cut-out fuse is as it has a white sticky lable attatched and some silver looking seals to stop tampering. The label may suggest you already have 80A cut-out fuse.
The DNO typically go no further than the meter box. They can see from their the size of tails going into the house are 25.
Keep me udated 🙂