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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

I'm making the assumptionthat whatever the cable is it will be cut to length in the factory and delivered as one continuous 300 metre cable and installed without any plugs sockets or connectors.
So if or can be unrolled off the drum with minimal mishandling, possibly from the back of a pickup or from a cable trailer then positioned in a relatively safe place it should not be too stressed.
When I was at college the lecturer said “Electricians don't do temporary ” in the context that we were training as installation electricians working to BS7671.
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0 Sparkingchip over 3 years ago

I'm making the assumptionthat whatever the cable is it will be cut to length in the factory and delivered as one continuous 300 metre cable and installed without any plugs sockets or connectors.
So if or can be unrolled off the drum with minimal mishandling, possibly from the back of a pickup or from a cable trailer then positioned in a relatively safe place it should not be too stressed.
When I was at college the lecturer said “Electricians don't do temporary ” in the context that we were training as installation electricians working to BS7671.
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