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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

Type of switch

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  • Does the labeling or instructions authorize installation in a plastic box, is it silent on the matter, or does it have language warning "metal boxes only"?
    – Harper - Reinstate Monica
    Feb 25, 2019 at 23:34
  • 1
    It looks to be silent. Instructions
    – RBH
    Feb 26, 2019 at 1:30
  • Amazon/ebay/aliexpress special
    – RBH
    Feb 26, 2019 at 3:58
  • This is a honeywell switch it seems, and from what I have read online, it is suggested to ground thru the screw as you have posted in your second image, if it is not a metal box.
    – Jeff Cates
    Feb 26, 2019 at 5:27
  • Looking at the docs this looks like a legit item. Some purchases from Amazon are okay.
    – Harper - Reinstate Monica
    Feb 26, 2019 at 6:27

2 Answers 2

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1

I called the company, they didn't seem very knowledgeable. Since the yoke is metal and would be grounded if installed in a metal box. I went ahead and grounded it as between between the box and yoke with the top screw.

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0

It looks like it's a class II product, so it doesn't need grounding.

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