Neff do a 13A induction hob now and I'm sure other manufacturers probably do now aswell, if they haven't bought the unit already it might be something worth looking into to save all this hassle
Had this before with tougher plaster than normal, was almost like a concrete skim. used the holesaw to mark the circle then used a 6mm drill to make a series of holes right round the circle then followed through with the holesaw
Call me stupid if you want, can you not just get a "normal" right hand main switch unit, slide the main switch along the busbar to the left, swap over the L&N, then go all rcbo? Would maybe increase your chances of finding the right height of unit to fit in the space?
Would using a 3 channel time clock or individual timeclocks then wiring three separate sort of "systems" help. the other valves won't operate if they don't have their "on" switch wire from the time clock and so having the oranges linked up wouldn't make a difference as the pumps will not be...
How about feed and neutral into first switch, switch and neutral back to light from first switch. Then just a 3core t&e from first switch, with com joint through in intermediate switch to your last switch.
At my old work we were always given these makita ones, still got a few of them now and have lasted well. Also cheaper than the Bosch one linked above
http://www.toolstop.co.uk/makita-p-33788-sds-plus-keyless-adapter-chuck-p11145
Try and get the valve flex pulled to somewhere accessible and into a joint box then come from that with your 5/6core flex or use 2x a 3/4core and remember what core is used for what. Always a pain when the valves and stats are spread around the house
Have used many including the Philips master and a cheaper loxa one both seemed pretty good and dimmed well with the right dimmer. Obviously a big difference in price but you get what you pay for I guess
by top hats do you mean fire hoods? i would personally focus more on the correct ip ratied lights for the zone on the bathroom side and just clear the insulation from above the light in the loft
XID100 | Xpelair
used these a fair few times mounted in lofts. there are also run on timers and speed controllers available and it all seems to work very well. usually use these in conjunction with a "fan light kit" disposing of the fan part and just usuing it as a ceiling grille with the 12v...
A good place might be to start with a simple set up of combination pliers, snips and a set of srippers. You can really go wrong with knipex in my opinion.
Something like this: (Insulated ofcourse, just incase!)
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc