Excellent "Wiring Unlimited" summary! I just have one suggestion:
At the top of page 8, your 2nd example says:
Let’s take the original example and now calculate for a cable with a cross-section of 2.5 m^2.
which is clearly a typo, but will lead to lots of confusion amongst many who are not so clear about this stuff. As you well know, this should be 2.5 mm^2.