three way switches

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  #1  
Old 05-05-03, 02:18 AM
Tom
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three way switches

If your installing more then one light fixture between switches, do you need to use 4 wire between lights, or can you continue to use three wire as long as the white wire coming from the last fixture is used as a traveler
 
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  #2  
Old 05-05-03, 08:29 AM
J
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To do this, you must use four insulated conductors (plus ground) between lights.

However, this cable routing is a generally bad design, because it leads to overcrowding and confusion at the lights. It is much better to use one of the following routings instead (where "-" is 14/2 and "=" is 14/3):

(1) Power-S1=S2-L1-L2-L3
(2) Power-S1=L1=S2, and L1-L2-L3

The first option is my preference by far, primarily becuase it means that all white wires are neutrals, and light wiring is as simple as matching colors. This eliminates a lot of confusion.
 
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Old 05-05-03, 03:06 PM
Tom
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(option 1) wire from the first switch to the second switch and then the lights?
 
  #4  
Old 05-05-03, 06:40 PM
J
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Yes. That's the way God intended.
 
  #5  
Old 05-08-03, 02:13 PM
Tom
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That worked. Thanks, i just learned how to wire my first three-way switch
 
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