Borrowing a cpc from another cct for lighting cct coded C2 in PE magazine codebreakers.

Just read in the above February mag the sparks has  borrowed the cpc

from another cable in the process of changing a kitchen into a utility room.,because the

lighting cct had no cpc.

Thought this was allowed under 543.1.2  if the borrowed cpc was of adequate size?

The article states"the 2 circuits are no longer seperate or individually isolatable,as they are

now linked".

                                                                                        Regards,

                                                                                              Hz