[TCUG] Re: Installation Earthing
- From: "Wallis, Ian" <Ian.Wallis@xxxxxxxxxxxx>
- To: "'tcug@xxxxxxxxxxxxx'" <tcug@xxxxxxxxxxxxx>
- Date: Fri, 20 Sep 2002 15:31:57 +0100
In my experience those who "believe" that there is a problem just cost
themselves a lot of money. Do your ELI tests show a problem? In my
experience using the armouring as an earth still gives readings far lower
than the maximum allowed by the regs even when 25 years old even with
surface corrosion.
Ian Wallis
Derby City Council
-----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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RE: [TCUG] Installation Earthing
In my experience those who "believe" that there is a problem just cost
themselves a lot of money. Do your ELI tests show a problem? In my
experience using the armouring as an earth still gives readings far lower
than the maximum allowed by the regs even when 25 years old even with
surfacecorrosion.
Ian Wallis
Derby City Council
-----Original Message-----
From: Probert, Norman (Environmental Services)
[mailto:NProbert@xxxxxxxxxxxxxxxxxxxxx[1]]
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[2]>
**********************************************************************
Privileged/Confidential information and/or Copyright Material
may be contained in this email. The information and Material
is intended for the use of the addressee(s) only.
If you are not the addressee or the person responsible for
delivering it to the intended addressee(s), you may not copy or
deliver it to anyone else or use it in any unauthorised manner.
To do so is prohibited and may be unlawful. If you receive this
email by mistake, advise the sender immediately by using the
reply facility in your email software.
Any views or opinions presented are solely those of the author
and do not necessarily represent those of Worcestershire County
Council.
Although this email and attachments are believed to be free of any
virus or other defects which might affect any computer or IT systems
into which the are received, no responsibility is accepted by
Worcestershire County Council for any loss or damage arising in any
way from the receipt or use thereof.
**********************************************************************
-----------------------------------------------------------
A message from the TCUG mailing list. For information about
the list visit //www.freelists.org/webpage/tcug[3]
**********************************************************************
The views expressed in this email are personal and may not
necessarily reflect those of Derby City Council, unless explicitly
stated otherwise
This email, and any files transmitted with it, are confidential and
intended solely for the use of the individual or entity to whom they
are addressed. If you have received this email in error, please
notify me immediately.
If you are not the intended recipient of this email, you should not
copy it for any purpose, or disclose its contents to any other
person.
This footnote also confirms that this email message has been
swept by MIMEsweeper for the presence of computer viruses.
However, we cannot accept liability for viruses that may be in
this e-mail. We recommend that you check all e-mails with an
appropriate virus scanner.
www.mimesweeper.com
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