which says I can't use the armour of SWA as the only cpc? I'm sure this in not alowed anymore but cant find it in the big red book anywhere
Thanks
Thanks
Can't be used? Read 543.2.2
In virtually all instances where smaller cables are used (up to 25mm), the armour can be used as the cpc.
Although the previously linked table implies otherwise for some sizes, this assumes that the cable will be operating at 90C, which it almost certainly won't be.
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