Cable calcs for right size cable

[shocksl]

Hey guys as some of you may know that I'm studying electrical installation at York college. I haven't really worked on site yet.

Just wanted abit of help. As I'm doing cable calcs etc which I've got the hang off.

Only issue I have is suggesting improvements as to smaller cable etc. Plus I don't know what the cable size means as in if they are too big for a domestic property or whetever we doing the calculations for.

Is there anywhere I can make myself familiar with cable sizes. So I can say this cable is too big etc especially based on ref method etc.

Otherwise I won't know. Just need to understand what the standard sizes should be .

Thanks for any help

 

[DefyG]

Also could you use a 10mm for like sockets if you wanted to ie ring circuits

You could but doubt many have the terminal capacity for a 10mm conductor, certainly wouldn't for 2 conductors if trying to construct a RFC with 10mm.

Remember installing a long radial once, with 6mm but that was about the limit (ie 2x6 in each terminal of that particular brand).