On 04/01/18 17:32, Andrew Gabriel wrote:
In article ,
"Dave Plowman (News)" writes:
Just how many time to these have to be replaced in a storm before they get
the message that they'd survive a storm if underground?

Probably a lot. Undergrounding cables is much more expensive
than stringing overhead. Normally only done where there's a
legal requirement, or someone else pays them to do so.


It depends. When I had my supply undergrounded in order to be able to
rebuild a 2 storey house, the received wisodm was that they were happy
to do it as the general policy was to underground as much 11kv as they
could.

The problem being theres a lot of it, its no higher than the trees by
and large, so it gets a lot of stick from lightning and from tree
branches falling.

33Kv and upwards I think they are less keen. And big 132/275kv pylons
are so far above tree level as to be uneconomic to underground.




--
Those who want slavery should have the grace to name it by its proper
name. They must face the full meaning of that which they are advocating
or condoning; the full, exact, specific meaning of collectivism, of its
logical implications, of the principles upon which it is based, and of
the ultimate consequences to which these principles will lead. They must
face it, then decide whether this is what they want or not.

Ayn Rand.