On Wed, 25 Feb 2015 16:46:01 -0000, harryagain wrote:


"Jonno" wrote in message
ldhosting.com...
Phi scribbled


"Tough Guy no. 1265" wrote in message
news Why are councils re-laying all the cables and replacing all the
streetlamp poles for no ****ing reason? All they needed to do
was to change the lamp on the top. What a waste of millions of
pounds of council taxes. The cables worked fine. The poles
were in perfect condition.

--
A blonde was playing Trivial Pursuit one night. It was her
turn. She rolled the dice and she Landed on Science & Nature.
Her question was "If you are in a vacuum and someone calls your
name, can you hear it?"
She thought for a time and then asked, "Is it on or off?"

They are replacing the cables because LED lamps take less current
for a given light output, so it was necessary to reduce the size
of the supply cables.


Cock

This would help address an area of concern with the existing council
cable networks installed during the 1980?s, when a type of cable known
as ?split concentric? was used. At the time, this cable was considered a
more secure choice for underground cable as it consisted of the neutral
and earth cables completely surrounding the ?live? core. If the cable
was cut during excavation works, the protection offered by the neural
and earth would remain until the ?live?core was completely cut. However,
over time , the insulation on this type of cable has deteriorated and
possibly broken down to a point where this cable would fail current
electrical tests with a resultant loss in electrical protection and loss
of service. Since the start of the 1990?s the Council has been using a
?Steel Wire Armoured? (SWA) cable, which has proven to be more
resilient.


http://www.stirling.gov.uk/__documents/temporary-
uploads/environment/ramp-cc.pdf

I haven't seen concentric cable for forty years.
It WAS a dead loss.

My house is supplied with it, including the cable they recently replaced.

--
Mary's lamb had foot and mouth.
The vet he came and shot it.
But Mary's Dad had shagged it twice.
And now her Mum has got it.