If you simply replaced one of the three-way switches with an ordinary dimmer switch, it would no longer toggle from one line to another and would only go on or off and reduce the power of the current. It takes a pair of three-way switches as shown in the diagram to cause that re-routing of electricity that will cause the light to change whatever state it is in, on or off, to the opposite state when you reverse either one of the toggle switches. In fact a three-way switch all by itself would be of little use for your light. One is the common wire and the other two carry that common current to one line or another. That is why the three-way switch has three screws on it. So here goes.Ī three-way switch does not just turn the electricity on and off, but it switches the current from one line to another. In fact I don't think I was perfectly clear about this when I did the segment on the TV show, judging by the confusion I heard after it was broadcast. Rebecca from Cold Lake, Alberta wants to dim her three-way switchs.
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