Day 4 of a new install and a neighbor's comment exposed my wiring habit
I've been doing residential alarm installs for about 6 years now, mostly around Tucson. Always ran my sensor wires parallel to the AC lines in the attic because that's how my first boss taught me. Last Tuesday, I'm finishing up a job in Oro Valley and this older electrician neighbor walks over, squints at my work, and goes 'You know that's just asking for a ground loop, right?' I laughed it off, but that night I looked it up and sure enough, my whole method was causing intermittent false triggers on two other systems I'd put in over the last 3 months. I felt like an idiot. Swapped my approach to crossing at 90 degrees and wrapping with shielded cable, and those problem houses went quiet. Has anyone else had a senior tech or a random bystander point out a habit you'd been doing blind for years?