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Old 09-21-2010, 11:39 PM   #1
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Dimmer Switcher Help


So I bought an electronic dimmer switcher (The kind that fades the lights when turning them off and on). Anyway the old switcher has two black wires going to it. I'm not sure how to hook it up to the dimmer because it is asking for black and red. Any thoughts?

Also, should I connect the ground(green screw) as well even though the old switch did not have one?

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Old 09-21-2010, 11:53 PM   #2
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Dimmer Switcher Help


there should be a diagram with the dimmer. I can't remember for sure but I believe the black is typically the line side (hot wire connects there) and the red is the load side (goes to the light).

so, you figure out which of the two wires is the hot, line, feed, whatever you want to call it and connect that to the wire the directions tell you to. Then, you connect the remaining black wire that goes to the light to the remaining wire on the dimmer.

yes, if there is a ground screw, you need to attach the egc (ground wire) in the box to it.

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Old 09-22-2010, 08:58 AM   #3
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Dimmer Switcher Help


So I should attach the (-) lead of my voltmeter to the white wires tucked away in the back of the box and then check to see which black wire is hot with the (+) lead?
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Old 09-22-2010, 09:05 AM   #4
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Dimmer Switcher Help


since you are attempting to read volts ac (selected on multimeter), the leads are not polarized as in dc voltage readings. your meter will read correctly with the leads in either position.
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Old 09-22-2010, 10:06 AM   #5
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Dimmer Switcher Help


I would check to the ground wire (bare or green). Not knowing what all you have in the box, there are times where the white wire (although it should be remarked as a black) is used for a hot wire or switch leg.
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