MEN is multiple earth neutral where the neutral & earth are tied together at switchboard.
A look at Australian Standard 3010:2005 chapter 4 shows two different methods of connection. The first picture is of a genset with the earth not tied to the neutral & using double pole switching of the outlets.
The other picture shows an RCD fitted to a portable genset with the lines side of the RCD connected to the earth point. The use of the RCD permits the use of single pole switching outlets.
If I can find an online copy of these pictures, I will arrange to have them put in this thread.
