Red and white as travelers on a 3 or 4 way switch

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DonnyPinFLA said:
Because of 200.7c1. Says reidentified white must be a supply. Which would be hot not a traveler correct?
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Generally, with a string of switches, you would feed the far 3-way with the whites through the switch boxes, and use the red and black as the travelers, returning to the load on black, just like a 2-wire switch loop.

However, whit the case of two 3-conductor switch cables leaving a fixture box, you'd have to use a white as a traveler in the cable with the switched leg returning to the light so you don't have two whites at the light.

For example:

3way-switch-wiring-diagram-nm3.jpg
 
If the reidentified white is a traveler then it can not be a supply. Which the code states is mandatory. I believe you graffic is incorrect. The reidentified white would have to be used as the common of the 3way switch. Am I not correct in what the code is saying?
 
DonnyPinFLA said:
If the reidentified white is a traveler then it can not be a supply. Which the code states is mandatory. I believe you graffic is incorrect. The reidentified white would have to be used as the common of the 3way switch. Am I not correct in what the code is saying?
Click to expand...
Then how would you wire the switch on the right in the graph​ic?
 
The Code means you can't use the re-identified white as the switched leg to the light. As Larry said, you would have two whites at the light. Technically, a traveler is a supply of sorts at one time, depending on the position of the switch.
 
“If used for single-pole, 3-way or 4-way switch loops, the reidentified conductor with white or gray insulation or three continuous white or gray stripes shall be used only for the supply to the switch, but not as a return conductor from the switch to the outlet.”

hi,
The reidentified white wire can supply the switch, as the above code says. But the switch leg, return conductor, can’t be. As Larry said.

Have a a good evening.
Jim
 
The code states... If used for single-pole, 3-way or 4-way switch loops, the reidentified conduc-tor with white or gray insulation or three continuous white or gray stripes shall be used only for the supply to the switch, but not as a return conductor from the switch to the outlet.

It must be a supply. I see the travelers being the return conductors because those are the wires that will be returning power to the switch leg. Is this not correct?

Sent from my LM-G710 using Tapatalk
 
DonnyPinFLA said:
The code states... If used for single-pole, 3-way or 4-way switch loops, the reidentified conduc-tor with white or gray insulation or three continuous white or gray stripes shall be used only for the supply to the switch, but not as a return conductor from the switch to the outlet.

It must be a supply. I see the travelers being the return conductors because those are the wires that will be returning power to the switch leg. Is this not correct?

Sent from my LM-G710 using Tapatalk
Click to expand...

"Return" means the leg back to the light or switched outlet. Just how would you "supply" a 3-way switch on the end not fed from the line/hot if not for the travelers? the travelers never go directly to the light, so they are not the "return".
 
I'll repeat my question: How would you wire it, as shown in my graphic?

Yes, the "normal" dead-end 3-way would use the white as the feed.
 
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