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Standard User panda
(committed) Mon 30-Sep-13 18:38:14
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Re: Any openreach (external) old hands on here?


[re: eddie1150] [link to this post]
 
To keep the cable dry.
E-Side and Junction cables may use conductors wrapped with a paper insulator. Air is forced into the cable at the exchange to maintain a positive pressure, which keeps moisture out.

Eats shoots and leaves.
Standard User David_W
(fountain of knowledge) Mon 30-Sep-13 18:44:33
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Re: Any openreach (external) old hands on here?


[re: panda] [link to this post]
 
There's more about cable pressurisation in this 1969 Post Office training booklet for staff.

Standard User IamQ
(experienced) Mon 30-Sep-13 23:04:04
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Re: Any openreach (external) old hands on here?


[re: David_W] [link to this post]
 
Does anyone at the exchanges even check alarms these days or look at the gauges?

My oldest cables have the original GPO gauges and alarm blocks (though look damaged now) the newest one also had a flow detector on, but again I don't think anyone has noticed.


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