Sorry to ask again , PVC conduit supports page 115 of OSG table 4C horizontal spacing am I right in saying the saddles should be 400mm apart or is PVC conduit classed as rigid insulating with a horizontal spacing of 1500mm ?
400mm seems awfully close once its marked on the wall.
I would say 400mm is correct but await being corrected. If you put the spacings further apart, over time the conduit looks like its bowed as looks sh*te as ive learned from when I put mine up about 8 years ago ffs.