Get them going and then solder the connections, finally heat shrink the the soldered cables and then heat shrink all of them together, using adhesive lined heat shrink.
The question is where do you stop. Armour is designed for exactly this sort of Job, so using the better glands for environmental protection, to me you have to put cost against any project.
A bit difficult to say as I don’t know the house layout. Under the floor or conduit!
If it’s safety protection (RCD) etc, I think if you mark and label the circuit as non RCD it is acceptable. Unless I haven’t spotted a regs change.
If it was me I would run a new radial circuit with no RCD just an MCB. nothing worse than a fault on the ring circuit taking the fridge freezer out, especially if you are away!
The other problem with cable is when it was run in the cavity and the house then had cavity wall insulation. I have removed cable that was just copper no insulation!
Hi UNG. I have never used a Metrel, so couldn’t comment. I have a 1741+ and have to send it away for software and firmware changes. I know the new Megger MFT you can download and install updates. I notice on the Megger site the 1741+ has been discontinued.
I suppose it is down to wether the MFT has upgrade facility (the Megger does) so new devices can be added and also wether you can do the software/firmware updates at home rather than sending it away.