Reg6.1.6 does not allow you to bridge the suppliers earth and neutral .
The problem doing that is if there are other users without the bridge and the transformer star point is stolen your service cable could suddenly become the neutral earth point for the transformer.
The current could be way past your cable size and cause a fire.
It is the reason the municipalities and insurance companies insist on 4 pole change over switches
6.1.6 The neutral conductor shall not be connected direct to earth or to the
earth continuity conductor on the load side of the point of control except as
allowed in 7.16.4.
The problem doing that is if there are other users without the bridge and the transformer star point is stolen your service cable could suddenly become the neutral earth point for the transformer.
The current could be way past your cable size and cause a fire.
It is the reason the municipalities and insurance companies insist on 4 pole change over switches
6.1.6 The neutral conductor shall not be connected direct to earth or to the
earth continuity conductor on the load side of the point of control except as
allowed in 7.16.4.
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