On 17/04/2021 11:11, The Natural Philosopher wrote:
On 17/04/2021 09:11, Andy Burns wrote:
ARW wrote:

Andy Burns wrote:

ARW wrote:

https://goo.gl/maps/WQQhtqdtJCyLf6c77
WTF?

insulating spacers to stop the phases getting too close in the wind?

Yep. I see it when I look further down.
And a customer sent me this last week
https://www.youtube.com/watch?v=uUow...tishPath%C3%A9

But those "X" spacers which the commentator says are to stop them
shorting the system, are on wires of the same phase!

they are to stop wires *chafing*,when on the same phase.


No, the X spacers for the four conductors on each phase of supergrid
lines give the overall conductor an electric field distribution more
like a larger diameter conductor, reducing the corona losses. I guess
they also reduce the conductor temperature at a given current from the
level if all the aluminium conductor was wrapped around a single steel
(load carrying) core.