20mm uPVC electrical conduit - to glue, or not to glue?
I'm about to install a lot of 20mm PVC conduit runs in my garage for upcoming electrical work, but I can't find definitive information on whether I need to be solvent welding all the connections, or not.
I came across some coupling fixings that allow for the pipe to expand and contract - suggesting that welding isn't expected - but I've also seen a few videos of people solvent welding the pipe into the female connectors for junction boxes.
Should I be solvent welding the conduit runs or not?