most of the time i can understand it but a lot of the other the times it drives me up the wall with all the fancy wording i have to reread it a few times. but yeah that's a fair point you've made.That is why it is their, under standing the regs it's like pulling your teeth out some times, are am I doing the correct things.
but asking small questions will go a long way, if you asking for advice on how to do it, then you might ask, some one to work with you a guide you.
for the skeleton board question its more of a physical installation question/opinion as opposed to a how to question. i also said what i was planning to do which i'm sure is the best solution but just wanted someone else's second opinion... i wasn't asking how to change a consumer unit, that would be crazy.
the questions about the bs3036 fuses were only hypothetical which popped in my curious mind as i was writing about changing the board.
i've had a look through the regs and on reg 132.16 it says no addition or alteration temporary or permanent to be made to existing installation unless is has been ascertained that the rating and condition of any existing equipment including that of distributor will be adequate for the altered circumstances.
433.1.202 where the protective device is semi enclosed 3036 compliance of iii of 433.1.1 is afforded if its rated current (In) does not exceed 0.725 times the current carrying capacity (Iz) of the lowest rated conductor in the circuit protected....
so this means for example if i am using a 1.5mm cable and the installation method is clipped direct that cable could take 20amps... 20amps x 0.725 = 14.5amps, the 3036 fuse cannot be greater than a 14.5 (In) so therefore the next fuse down will be a 5amp fuse.
If the cable was clipped direct, didn't need mechanical protection and the cable/circuit didn't need additional protection bs3036 fuse would be still good to use hypothetically?
correct me if i am wrong... but this is why i asked hypothetically, i dont plan to install using 3036 fuses, but i wanted to know if its still considered correct to install. from what i can see in the regs, its still deemed as acceptable.