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Deleted member 9648
Terrible, conduit would have been nice and neat or run cables inside and chase fill accordingly, fuse spur for feed, with switch to energise switch live/trigger to linked PIRs. Or suitable fittings with ingetral PIRs. No excuse for sloppy work. Ask to remove and get some quotes from some sparks who take pride in their work.
I'm still at college and I know this is wrong. Should either be chased / under floorboards indoors or conduit outside for neatness and mechanical protection. Also I don't get the need for separate pirs, it just looks crap adding all the extra cabling and it's just not needed.
Running cable in internal chases can result in safe zone issues,separate PIR's can be an advantage due to better coverage and better quality. Most 'reasonably priced' fittings have rubbish PIR's.