Basic cabling structure question

Hi guys,

Before anybody get's too concerned, when it comes to install, my father is a sparky, he is just a bit old school and doesn't know anything about Cbus so i'm trying to read and understand.

We are building a new house, the builder will cable everything for standard wiring system, and i'm making sure when we get handover we can then cutover to cbus. I realise now that's not ideal, but what's done is done.

We will be running TC+E and Pink CBUS from my rack (garage) to each and every control point we want. IE - lights, blinds, PIR's etc.

Now from my understanding switching wires will become redunant with the relay introductions, so provided I have TC+E to all lights + CBUS I'm all good.

Am I missing anything?

 

Looks OK. As long as you have an individual 240V cable between each light (or group of lights) and the point where your relays and dimmers are mounted it should be OK.

To save very long runs of 240V cable I divided my relays and dimmers over two locations - one located near the front of the house (garage) and one located near the rear of the house (passage).

To aid fault finding I divided my C-Bus cables into six groups that are commoned together on a patch block. This makes it quick and easy to isolate one or more of the groups.

 

What you are describing is not very efficient.

You need to identify a location in the house (or 1 per floor or similar) where you want to site the relays and dimmers and then wire mains cabling from the loads back to the dimmers and relays. This is a completely different wiring scheme from the conventional 240v switch. You also don't want 240v anywhere near the switches as they are all low voltage.


If you are using LED lighting and want to dim that then you do need a CBUS cable nearer the load.


Mark