Bathroom exhaust timer switch- ground has current


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Old 04-28-19, 05:06 PM
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Bathroom exhaust timer switch- ground has current

Attempting to replace a timer switch that controls a bathroom exhaust fan and separate light (not part of the fan). Checking the wires with a tester I was getting a signal from the ground wire that is coming off the switch.

Disconnected said ground to see what was going on and the switch stopped working. I checked the ground again and it still tested positive for a current. I should also note that the switch has a decal on it saying it won’t work without a connected ground. But that shouldn’t cause the ground to have a current. Correct?

Not it sure why this is happening or where I should start troubleshooting. Any advice would be much appreciated. Thanks.
 
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Old 04-28-19, 06:19 PM
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That is working ok and is normal. Those types of sensors use the ground in place of the neutral.
The ground current is extremely low and must be to pass UL approval.
 
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Old 04-28-19, 07:35 PM
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Perfect. Thanks for the quick reply.
 
 

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