I'm going to wiring up the various components (Timer, mid-port valve, room &
cylinder stat, boiler, pump) of a 'Y' plan Cenrtal heating system soon.
I actually know the wiring diagram and what connects to what, but can't seem
to find any guidance as to the best cable type to use, and would welcome
guidance as what amp cable to use and how many core.
Would also appreciate some help for what colour cables connect to each
particular terminal of each component , is there a set standard for this
Thanks a lot