[TCUG] Re: Installation Earthing
- From: "Welsh, Paul" <Paul.Welsh@xxxxxxxxxxxxxxxxxx>
- To: "'tcug@xxxxxxxxxxxxx'" <tcug@xxxxxxxxxxxxx>
- Date: Fri, 20 Sep 2002 15:49:01 +0100
When we were preparing the TCUG recommendations on Earth Impedance Testing,
this came up and the result was that it gave a better performance than a
separate lead. Terry Carter is your guru.
Mind you, the clamp still looks horrible, like something from Halfords,
rather than a professional design!
PW
-----Original Message-----
From: Probert, Norman (Environmental Services)
[mailto:NProbert@xxxxxxxxxxxxxxxxxxxxx]
Sent: 20 September 2002 15:25
To: tcug@xxxxxxxxxxxxx
Subject: [TCUG] Installation Earthing
We have been looking into providing better earth continuity at
installations, we believe that the existing method using the armouring is no
longer sufficient and can lead to high readings therefore a separate 10mm
earth conductor should be used from each pole. There are two options either
build this into the existing cable or install a separate armoured cable
containing earth only. Our problem is that this is a non standard cable and
would have to be purchased in significant quantities 5,000 metres at a go,
we are finding it hard to convince our suppliers that they could offer this
cable to others and we are also reluctant to make the purchase ourselves.
My question is
A Does anybody else agree that it is a good idea (if enough took it up it
could become standard instead of special).
B Does anybody currently use this type of cable already and if they do who
makes it.
C Has anybody got a better idea
Norman Probert
Senior Engineer Traffic Control Systems
Tel 01905-766822
Email nprobert@xxxxxxxxxxxxxxxxxxxxx <mailto:nprobert@xxxxxxxxxxxxxxxxxxxxx>
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