If you are buying cable get on with it. We were sub £185 on 10/3 a couple of weeks ago but are now at £205. I am sure that the cable companies just use fluctuating copper prices as an excuse but whatever the reason, cable is set to keep going up for the short term.
Well you wouldn't, would you - the volt drop limits I quoted were for 6mm² and 10mm², the two sizes dw3101 was considering, not 16mm²....
Also - be careful with using XLPE figures, VD is lower, and current ratings are higher. I'd have a concern (maybe unwarranted, but caution is a good policy) that the higher rating is partly because the insulation can withstand higher temperatures. If you're running it at the limit it might get too hot for what you're terminating it in...
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