Why a vertical orientation? I'm afraid I have no idea! All the 240/415V distribution that I can ever recall seeing was done this way.
The 11kV and 33kV distribution is arranged horizontally on cross-arms, as you can see in some other photos.
I can only guess that the vertical arrangement just grew up as a convention, or maybe somebody figured it would save materials by not having to use cross-arms.
What arrangement of conductors do you use in NZ?
Yes, we have a main fuse (owned and sealed by the power company) fitted on the board just ahead of the meter.
Have a look
here .
[This message has been edited by pauluk (edited 09-20-2002).]
