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Old 06-22-2010, 03:54 PM   #1
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3 way OCC sensor


I would like to install 2 OCC sensors to replace 2 3way switches. Can 2 single pole OCC switches wired in series work? The switches are at the top and bottom of a stairs, so both OCC sensors must function.

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Old 06-22-2010, 05:44 PM   #2
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3 way OCC sensor


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Originally Posted by Jessie12 View Post
I would like to install 2 OCC sensors to replace 2 3way switches. Can 2 single pole OCC switches wired in series work? The switches are at the top and bottom of a stairs, so both OCC sensors must function.
The SP switches should be in parallel to get an OR function, and that assembly in series with the source and the load. If either one or both are on the light will then be on. This is assuming the sensors present a pair of contacts that close, just like a wall switch.

Do you have a link to the sensors?


Last edited by Yoyizit; 06-22-2010 at 05:50 PM.
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Old 06-22-2010, 10:46 PM   #3
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3 way OCC sensor


P&S also makes a "3-way" sensor. Most wall sensors can be wired in parallel like Yoyizit said, but this product is leaded specifically to be easy to install in a 3-way application.

Link: http://www.legrand.us/PassAndSeymour.../RW3U600W.aspx

You have quite a few options though, because you can just wire in parallel and pick a sensor you like.
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Old 06-23-2010, 12:55 PM   #4
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3 way OCC sensor


And in the link, the max lamp you can use is 1/6 hp, ~120w.
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Old 06-23-2010, 01:54 PM   #5
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3 way OCC sensor


That sensor is good for 600 watts according to P&S, not 120 watts.

Ideal for storage and utility areas (garages,
laundries, closets, pantries, etc.)
Hands-free convenience.
RW500U (25W to 500W), no neutral required;
RWU600U (600W), neutral required.

From a pdf linked from this page.

http://www.legrand.us/PassAndSeymour/Lighting-Controls/Residential/Residential-Sensors/Single-Pole-3-Way-Occupancy-Vacancy-Sensor/RW3U600W.aspx


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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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