PME'd street lighting has an additional electrode
Chris Pearson:
Concerning separation of different earthing systems: is it permissible to place an earth rod close to the DNO's service cable? I cannot see how they would interfere with each other except in the event of damage to the latter.
On the subject of street lighting, I was told by the head of my local authority's Street lighting dept that they only earthed the head (light fitting) and not the column.
Things may have changed since 2008 though!
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