3 way switches - need to replace both?
3 way switches - need to replace both?
Do I need to install Kasa 3 way switches at BOTH current switch locations or will one do?
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@bmtanner Only need one. You need to install it at the switch that is the power source.
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@bmtanner +1 on above post - and also to emphasize again that you must install at the incoming Line end, not the load end
I created this diagram for another member - hopefully that is helpful for you also
Note that you do not have to do anything regarding re-wiring of the 'load' end switch (as long as you have at least successfuly identified which one is which)
And to confirm this will provide manual operation for on/off from either switch (just as it does now with the dumb switch config) as well as the Smart capability.
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@bmtanner Yes, either a meter or a non-contact voltage tester (which is a great tool to have around and not that expensive) - it will even read through the insulation, so very safe to use on a powered circuit.
Do search for non contact voltage tester at Home Depot or Amazon etc
Here on Amazon - non contact voltage tester
(they all do the same thing essentially, some just have more additional features beside the fundamental)
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@bmtanner You can sometimes tell, especially if one is a dual gang box - if there is common incoming black were that feeds TWO switches, then that is almost certainly a line wire (a load wire would not go to multiple switches). But still just safer to get a tester - it's a handy tool to have and especially if you plan to do more of these (and you will! It's addictive!)
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@bmtanner Here's an updated schematic including the ground and Neutral as White (as it should be) :)
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@Bethel.8009 you seem to really know this stuff. Can you also tell me, since Kasa doesn't make a 3 way dimmer, can I replace the non-dimmer switch of my current 3 way with the Kasa 3 way and control the on/off via the app, just not the dimmer function (and just adjust that manually)?
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