A standby generator is permanently installed apparatus, much like a compressor for a central air-conditioning system
That statement hardly helps clarify the purpose of a standby generator for the man on the street.

As an alternative, the manual may ask you to run a ground wire from the generator's grounding terminal to the ground bus inside the house's service panel. As long as you follow the instructions provided in the manual, the generator will be safely grounded.
Hmmm, so it's okay for everyone to remove the covers from their DB and connect earth wiring. Also no mention that with newer installations there should be an earth bar somewhere on the premises that's accessible and is specifically for this type of connection. Also a heavy implication that manufacturers instructions should be followed regardless of what SANS 10142 has to say.