I have already taken into account the the load factors, and I will be using the bog standard rotary timer switch, to be installed close to the CU. Just a one small circuit on the ground floor of a small house, so the standard timer will suffice.
I guess my real question is in regards to the actual method of wiring up (terminating) the 3 core plus earth from the CU to the actual timer switch, then the 2 core plus earth out to the actual light circuit, basic stuff I know and will follow manufacturer's instructions of course, although they mostly un-simplify even the most basic of tasks..
Just hoping to get some practical wisdom from the wise men?
thanks for the posts so far