Gday Trumpy. The second post on that forum was classic. "I'M NO SPARKY, BUT I'VE JUST FINISHED WIRING MY OWN HOUSE". The rest of his post gave me the impression that he wasn't kidding either ! !
The older domestic DBs here in the South Island don't have a main breaker. Just a 63A rewirable porcelain fuse at the entry to the house and a main switch on the DB. I guess these DBs were installed before MCBs were invented. This setup is very common in the older suburbs of Christchurch. One wrong move whilst working live in the back of these DBs can result in a decent explosion ! ! ! Especially if that house is next to the 11kV tranny.