“Romex” (NM) does not belong in conduit, and it is not allowed for use in damp/wet locations. So the answer to your question is “no,” but this wiring method is improper for exterior lighting. So the answer to your question is “no,” but this wiring method is improper for exterior lighting.Click to see full answer. In this way, can Romex be used outside in conduit?No. Romex+outside in conduit= wet location. Conduit which is not subject to any weather would be OK, but very few outdoor locations fit that description. The bottom line is this: if you could use NM there without conduit, then you could sleeve it in conduit.Additionally, can nm b wire be used outdoors? Since @Tim’s post didn’t make this clear: under the current code, you are not allowed to run NM-B wire outside, even through a conduit. That is, you are no longer allowed to put NM-B cable in watertight conduit outside of the house in wet locations. Keeping this in view, what cable is suitable for outdoor use? Once outdoors, you should supply your lights via 1.5mm² three core steel-wire-armoured cable (SWA). Make sure that you only fit weatherproof lights that are suitable for outdoor use and that your circuit is RCD-protected.Can you run electrical wire outside?You can run electrical wire outside to nearly any location. Although some types of electrical cable do not have to be enclosed in conduit for outside installation, enclosing any exposed cable is a good idea. Schedule 40 polyvinyl chloride (PVC) conduit for electricity is gray and is rated for sunlight resistance.
ncG1vNJzZmivp6x7pLHLnpmroaSesrSu1LOxZ5ufonuotI6cmKdlmWLCtLGMq6amnahivLbA0qKbnmc%3D