The SWA I've bought has 11.7mm diameter according to the spec, I need to take it through a solid double-brick wall and pull about 5m of cable through. Should I have any concerns about damaging the cable - to be neat I'd go 12mm drill but maybe 14mm would be better? I'm assuming it's total overkill to fit any sort of duct, not to mention needs a much bigger drill and being careful, I shouldn't have any real problems?
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