Hi all, have a job doing some garden lights. Want to use flexible conduit as I can fix to a wall that is then being battened out so no need for armoured. I would normally use black .75 pond flex for this sort of job but can only find it in 3 core and need 4 cores. Whats the opinion of using normal flex? It shouldn't be used outside but will be contained for most part apart from a few inches where it comes through the batten into the fittings (no danger of sun damage). Artic flex would be another option but getting it less than 1.5mm is a pain. Any thoughts