MEN must be provided according to this
AS/NZS 3000:2000
5.6.4.1 In every electrical installation a main earthingterminal/connection or bar shall be provided at the main switchboard and the following conductors shall be connected to it:
a. main earthing conductor
b. MEN link
c.protective earthing conductors.
d. functional earthing conductors, if required
e. equipotential bonding conductors
I would say using the SWER system if you didnt have the nuetrals connected through the men link nothing would work as you are only supplied with an active conductor using earth as the return path
