Can Your Wall Scanner Actually Find Live Wires?

Logosofia no Dia a Dia · Sep 1, 2026 · 22m

Your stud finder might find studs perfectly while staying completely silent about the live wire stapled to the side of it. In this episode, we dig into the confusing world of wall scanners, stud finders, and AC detection tools — and discover that even the $100 models recommended by every review site can fail to detect live wiring in controlled tests. We break down the three tiers of wall detection (safety-critical, important, and nice-to-know), explain why the "predictable paths" rule for electrical wiring is more convention than code, and share the simple technique that professionals use…