Thanks for the replies. The comments are as expected. I have bridged the earth / neutral in the main DB and left the sub DB's as TN-S. We will just have
RegElec Today, 10:23 AMI Agree with Derlyn
Further to that and a problem that could occur by earthing the earth neutral - How big is the pole top transformer ,
For any of your protective components to operate on an earth fault, your neutral and earth must be at the same potential, so I would suggest earthing
Derlyn Yesterday, 10:36 PM
ELI Way out of Spec
I would rather have done it at the meter box if possible at least then i would not have contravened 6.1.6 and if there is a huge surge down neutral earth
GCE Today, 10:46 AM