How to get Power to a 3-way from a 3-way?
(Unswitched power refers to the power feed cable or power source or the line going back to the breaker panel.)
OT: "Unswitched power" can be relative, for example you have a power cable going out to a detached garage but there is a "master" switch for it in the main house. With respect to feeding other switches controlling lights, etc. in the garage, the feed cable is considered unswitched power. Whereas when referring to the master switch, the cable going out to the garage is switched power.
The neutrals for all of the lights, receptacles, etc. served by a particular power feed must be ultimately connected only to the neutral in that feed cable.
Now a question, which I think the OP was asking:
He has two 14-3's going between the boxes. One is for travelers and neutral for Light B wired to box 2 (left side of diagram above). The other is unswitched power and travelers as a switch loop for Light A wired to box 1. Over at Box 2, may the unswitched power (white with black markings) from one 14-3 and the neutral (unmarked white) from the other 14-3 be used for other purposes such as a Light C with pull chain?
Last edited by AllanJ; 11-11-2008 at 10:08 AM.