Lamp post fed from communal supply

Depends on the design of the lamp post - modern steel tube ones are normally earthed, very old cast iron ones used to sometimes be considered to be their own electrode, this is not really acceptable as paint and cement mean that does not really work, Is the cabling and fixtures within all double insulated or equivalent so its class II ? Is there a stud that looks like a terminal that has been ignored ?
When street lamps are connected unmetered and get a concentric CNE supply opinions and practice over the years has varied by DNO if it is better or not to connect the combined neutral earth to the lamp post body. However this I presume is a 3 core (LNE ) supply even if TNC-s at the origin, so PME direct to small load is not the case and it can be earthed.

Mike.

Mike.

Depends on the design of the lamp post - modern steel tube ones are normally earthed, very old cast iron ones used to sometimes be considered to be their own electrode, this is not really acceptable as paint and cement mean that does not really work, Is the cabling and fixtures within all double insulated or equivalent so its class II ? Is there a stud that looks like a terminal that has been ignored ?
When street lamps are connected unmetered and get a concentric CNE supply opinions and practice over the years has varied by DNO if it is better or not to connect the combined neutral earth to the lamp post body. However this I presume is a 3 core (LNE ) supply even if TNC-s at the origin, so PME direct to small load is not the case and it can be earthed.

Mike.

Mike.