I have a timer switch (see photo 1) that has No Grounding Screw and ** No Grounding Wire** protruding from it. It is to be installed into a plastic gang box and replace a switch which is currently grounded by a wire.
The power source for this switch comes from a GFCI circuit.
Should I ground the timer switch by wrapping it around the screw attached to the yoke like the second photo.
Black Hot White Neutral Blue Load