new auto shut-off timer switch (for attic fan)

When I installed my attic fan several months ago, I also incorporated in a standard 2-way toggle switch to ensure the fan doesn't run unless I want it to. Yesterday, I decided to change out the toggle switch with this auto shut-off timer switch: http://www.intermatic.com/?action=subcatsid=46 When I was using my toggle switch, I had the black, white, and ground wires connected to it. With the new timer switch, there isn't a terminal screw for the ground wire. So, I just left the ground wire dangling in the box. Should I be concerned? (The new timer switch works fine.) Though I usually hate the word dangling, you are fine. Not all devices like switches have grounding screws and are either grounded through the frame or are all-plastic and have no need for grounding (like many smoke detectors.) Edit: Does that have a metal coverplate? Is your junction box metal (and grounded) or plastic? Heh heh--the ground wire is actually folded and tucked in pretty tight because there's not much space left in the j-box. Regarding your questions: Yes, the timer has a metal coverplate. My j-box is plastic. Thanks again for your response--I really appreciate it. You need a metal box. At the very least, ground the metal switch plate. But you really need a metal box. Originally Posted by racraft You need a metal box. At the very least, ground the metal switch plate. But you really need a metal box. Just installed the metal box last weekend--thanks again for the tips. I actually have one more question: The drywall hole for the existing box was oriented horizontally, and now I'd like to reorient the new box so that it sits vertically. What's the best way to do this? (Is there a trick or technique for recutting the existing horizontal drywall hole, or would I be better off cutting a new vertical hole at a different location, and completely patching the old hole?) Bob, If the metallic cover was connected to the ground wire from within the box, via the cover screw, do you feel a metallic box is needed? Without the metal box, it seems that compliance with 314.25(A) and 250.110 are complied with.

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