I wanted to turn on/off a light from both ends of a hallway. My contractor would charge more than $100 for it. Being a cheap guy (and love to learn new stuff), I decided to wire it myself.
Standard 3-way switch wiring:
I knew the theory from middle school that I would need three wires between switches. I purchased 20 ft of 14/3 quick pull cable from Homedepot, two 3-way switches and a light. I knew the standard way to wire the light. It is shown in figure 1. However, the more I thought about it, the more I did not like it. It wasted the middle section of the 14/3 cable.