Why doesn t my PROTEK trip when I test the drill and PROTEK on my metal desk?
The PROTEK interrupts power to the drill within milliseconds after the drill bit touches grounded metal. Grounded metal would include building components such as metal water pipes, electrical conduit, and certain types of reinforcement steel. If properly installed, all of these materials are “electrically” grounded to the ground bus in the breaker panel. Metal desks, metal door frames, or pieces of metal laying on the floor or ground are probably not electrically grounded, so the PROTEK cannot detect when the drill bit touches them. Control Loop When the drill bit encounters grounded metal, the Control Loop is completed (closed), and the PROTEK stops power to the drill. All segments of the Control Loop must be in place for the PROTEK to function properly. If the Control Loop is interrupted at any point, the PROTEK will not shut off power to the drill when the drill bit encounters grounded metal.
