I'm seeing a lot of conflicting information about outdoor wiring, whether conduits, steel armour, etc. are necessary. I assume this might be due to particular 'zones' as in bathrooms, but I can't find any information on that - e.g. steel armour for cable on a wall, particularly above some height, seems pointless to me.

My question then is for outdoor lighting in particular, wall-mounted, coming through the wall (already, at about 1m high) from inside: do I need to use conduit, or any particular kind (or IPX4 (surely all cable is pretty much IP67+, the ends excluded, anyway..) or otherwise 'outdoor' rated) of cable?

I'm not asking about fixtures and junction boxes etc., purely cable.


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