Am I going to be the only one to point this out here? This should be straight forward work? I had an apprentice on site last week who could wire one of these to a contractor from a TPN board.
Control feed would just be a supply to the timer, this would need to be protected against short circuit, over current protection earth faults, I generally use a spur here from a final with a 3A FCU.
You now have a second feed from a 10A type B or C to one of the timers relay contacts and then from the switched contact to the lights. Again this would need to be protected against short circuit, over current protection earth faults, and this would be the feed to the lights.
Do you think that you do not need two feeds and two methods of protection? You can if you design it correctly used a larger feed to a contractor enclosure and a din rail fuse holder for the control feed.
I have been vague and left out some technical details as reading your other posts this stuff should be bread and butter work. And I read you do not have BS7671 I do not see why I should quote reg numbers as you cannot look them up.
Draw the circuit out on paper and please think about it.