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Old 02-04-2012, 10:55 PM   #1
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Mystery Light Switch


In our mudroom is a double gang box with two switches. They are both 3-way switches. One controls the light in the room (and another switch in the garage controls this same light) but the other one has been a mystery ever since we've owned the home. The mystery switch is bigger than regular 3-way switch and says "SPEC GRADE" on it.

In the garage switch box (which has the second switch for the mudroom and a garage switch) there is another switch just like the mystery one that controls the garage lights. This is also 3-way because another switch by the outside door turns these same lights on.

So what gives? What is a Spec Grade switch? Also, what is the easiest way for me trace the mystery switch? What may it likely control? The house was built in the late 80s. Thanks!

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Old 02-04-2012, 11:26 PM   #2
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Mystery Light Switch


Spec Grade is a higher quality of device than the bulk bin versions.

Do you have outside lights that the switch may control?

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Answers based on the National Electrical Code. Local amendments may apply. Check with your local building officials.
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Old 02-04-2012, 11:31 PM   #3
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Mystery Light Switch


I have looked and nothing comes on when I flip the switch. It is also 3-way so it leads me to believe that it MAY control the garage light (makes sense) and is not connected properly. Any other ideas?
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Old 02-04-2012, 11:44 PM   #4
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Mystery Light Switch


SOLVED: Just redid the connections and it does, in fact, control a set of outdoor floodlights. Thanks!
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