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Bunched Cables
Former Community Member
Looking at running new circuits above a ceiling on a job and came across this,
What do you think the grouping factor is? ?
Does anyone else prefer running singles in conduit/containment? T&E is always quicker and easier to install, but I would only tend to use it on domestic installs,
well if your new cables are on the outside, their grouping factor is quite good, but it is the cable in the middle that gets cooked.
There is a lot to be said for cable baskets in these cases. Equally in large rambling installations with big buildings cables are sized by volt drop, not heating considerations, so the bundle often runs cool anyway.
There must be miles of roofspace cable installations like this waiting to drop on the unwary, it's not great, but it usually gives no trouble.
well if your new cables are on the outside, their grouping factor is quite good, but it is the cable in the middle that gets cooked.
There is a lot to be said for cable baskets in these cases. Equally in large rambling installations with big buildings cables are sized by volt drop, not heating considerations, so the bundle often runs cool anyway.
There must be miles of roofspace cable installations like this waiting to drop on the unwary, it's not great, but it usually gives no trouble.
