What cable do I need for wired systems?

Wiring centres require a 5Amp Switched Fused Spur, and thermostats require a 3 Core & Earth at a minimum 1.0mm² (size of cable dependent on cable length, consult your electrical contractor) from each zone back to the corresponding manifold.

You will also need a 2 Core 1.0mm² cable from your wiring centre(s) back to your boiler to send signals to create more heat.