Inside the HSJB: what BRE’s impact rig thinks of a 3D printed junction box
Every Grade 3 upgrade hits the same ugly moment: the field joints. The panel is graded, the detectors are graded, the keypad is graded — and then there’s a plastic conduit box on a wall carrying the lot, with no tamper protection, quietly failing the whole design. Full re-containment fixes it, at a cost that…
