On Sun, 19 Mar 2017 20:12:19 GMT, Harry Bloomfield
wrote:

expressed precisely :
Wonder if H Bloomfield did a typo and meant 33Kv which is used
frequently .

No, I meant 3.3Kv or 3Kv3.
Well that is a voltage I don't remember seeing anywhere.I'm off down
the local in minute where a the missus gets gardening tips from a
bloke who is always winning growing competitions often calls in.,He is
also a retired Linesman for what was Southern Electric, I'll ask him
if he knew of it any area. It's possibly a std that hung over in a
particular area or two from prenationalisation days .


So far as I am aware, all 11Kv and up is on
metal poles.

I'm genuinely surprised that you think that.
http://norpower.co.uk/services/11-33kv-wood-poles
Been in use donkeys years,the 11Kv that crossed our land on wood poles
went in 1958 and a couple of miles away the small Substation had 33Kv
wood pole lines feeding it as do 1000's of others .Many wood poles
have been replaced in recent times with new wooden ones a little
taller in a rolling programme to raise the height of lines above
fields as farm machinery has got taller.


http://norpower.co.uk/services/132-kv-woodpoles
http://www.wilsonfearnall.co.uk/new-...or-shropshire/
These are relatively recent development allowing wind farms easy
connection and network strengthening and it is understandable that
many will not be aware of them, the tall insulators in the trident
formation are the most obvious clue.

G.Harman