Hmm,
I just worked out what that first picture on that page was, it looks like one of them new plastic fronted switch-boards, with MCB's in it.
Kiwi,
I agree, having a house with new non-compliant wiring in it, could be just as bad as having old wiring, from a safety perspective.
Paul,
Suppose you were called to put up some fancy light fixture in place of an existing one. What would you check? Condition of the wiring, earth continuity, loop impedance to that fitting, switching in the phase, proper overcurrent protection for that circuit at the board, and that the new fitting won't be placing too much load on the existing lighting circuit maybe.
Biggest nuisance I've come across here when doing a job like that is the lack of an Earth conductor at the light fitting, the old light fitting (usually a plastic batten-holder) having been fed by a 2-core TPS cable.
But yes, my checks would be along them lines though.
As a matter of course, I remove the individual porcelain fuse carriers, when I'm at a switch-board just to make aure the fuses are the correct size.