Sorry for opening this up again, but I just can't help thinking that there is something wrong with this story.
Fatin, states that there is a 20m (metre?) seperation between the services, as in different Cross-arms.
Fatin, as a Practising Line Mechanic/Faultsman/Electrician, from NZ that uses 22, 33 and 66kV, sometimes on the same pole.
66kV is on a wooden pole at the top, depending on the area, 33 would be under that and if you were really unlucky, you would have the 400/230V MEN system below that.
But all spaced at 5 metre intervals vertically.
So that you can get an EWP somewhere near the thing, after Faults have happened.
Let's face it, these days if you're not young, you're old - Red Green