Design 32a 4mm radial

[Big daddy B]

Good morning I wonder if I could have some confirmation in regards to a radial circuit.

I have been showing apprentices different methods if wiring ring and radial circuits.

I wish to continue this next week.
I can not see any regulation not permitting the drawing enclosed, I would just like to confirm if it is installed on a 32a mcb with rcd protection and uses 4mm throughout, in my mind this would operate the same as if you ran a cable from main consumer unit to secondary (e.g garage) using an adequate power supply and cable and then allocating circuits.

Your assistance would be appreciated!
Kind regards
Paul

 

[timhoward]

Of course as we all know, in practice it is not always possible to wire it as shown on drawings.

Agreed, the initial post saying this was a demo for apprentices is actually my main concern as I’d have thought they would be better off starting out with clear thoughts about more typical circuits, and built on that with understanding of overload and fault protection (encompassing selecting ocpd, installation methods, ccc etc) so they can assess anything quirky from first principles.
If this was a classroom exercise to discuss the regs then fair enough.

 

[Zerax]

Agreed, the initial post saying this was a demo for apprentices is actually my main concern as I’d have thought they would be better off starting out with clear thoughts about more typical circuits, and built on that with understanding of overload and fault protection (encompassing selecting ocpd, installation methods, ccc etc) so they can assess anything quirky from first principles.

Oh... I'd assumed that they were kitchen fitting apprentices ?

 

[timhoward]

Oh... I'd assumed that they were kitchen fitting apprentices ?

You may well be right, in which case even more reason to stick to Appendix 15 circuits!