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Appendix 4, section 6.1 equation 6

Former Community Member over 3 years ago

Hi I am working through equation 6 for an ambient temperature of 50 degrees for 1mm 90degC thermoplastic cable (Table 4E2A)

I get a correction factor of 0.95 for a 2A load.

Do i divide the mV/A/m by this factor ?

The text says multiply, but that would mean the resistance decreases with the increase in temperature (or have I got the sum wrong?)

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0 Sparkingchip over 3 years ago

So is this 300 metres through a railway tunnel or similar that already has cable supports installed?
In my head I was picturing a couple of guys trying to pull 300 metres of cable in one length through the roof of a commercial or industrial building, if it’s a tunnel then presumably the cable can be installed without stressing during handling, so does not need to be so robust.
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0 Sparkingchip over 3 years ago

So is this 300 metres through a railway tunnel or similar that already has cable supports installed?
In my head I was picturing a couple of guys trying to pull 300 metres of cable in one length through the roof of a commercial or industrial building, if it’s a tunnel then presumably the cable can be installed without stressing during handling, so does not need to be so robust.
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