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Discuss Ok this is a bit OCD but I will ask .. in the Electrical Forum area at ElectriciansForums.net


Electrician's Arms
got an central heating system installation to tidy up and wire as an s plan. The new valves are further away from the wiring centre than the cables provided ...... so I was wondering how easy it would be to buy some multi core cable with the appropriate colours .....

Found some but it’s 50 metres ..... on amazon and toolstation

Anyone know where I can buy this by the meter

And yes I know I could use standard 5 core flex, but I want to have the colours correct!


Scouser and Proud of It
Respected Member
use sleeving.
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Dave OCD

Forum Mentor
If it's an S plan you'd only need 6 cores altogether to serve both valves as you have common permanent lives,switched lives to boiler, neutrals and earths so I'd use normal HR flex and a small enclosure with appropriate lever connectors to extend adjacent to the valves.


Electrician's Arms
if you want to have the colours correct at both ends, cut a good length off what you've got and put in 2 joints with normal flex inbetween


Scouser and Proud of It
Respected Member
5 core flex with all cores black, numbered 1 -5, and add sleeving of your choice of colours.

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