I have an existing 14/3 romex that only has two standard lights on the run. I want to cut this wire, continue that run, but also I want a simple electric outlet in my basement. This is where the 14/2 would come into the picture.
I would tap into the existing 14/3, continue it, but then split off for a new outlet with the 14/2. I want to know if taking only one of the two hots is ok and continuing with two hots to the light switches. Thank you.
Please see picture.
Best Answer
You can splice into a 3-wire cable just as you'd splice a 2-wire cable, assuming it's not for a three-way switch or some other specialty case. Do it as you've drawn.
You'll need slack. If you don't have it, plan for either using two junction boxes, or splice at an existing box.
For the two-box method, mount two boxes at least 24" apart and cut the cable between. Make your splice in whichever box is most convenient and run a jumper between boxes. Obviously this means you need more /3 cable. Do not run parallel cables as a substitute, which would be illegal.
Be aware that junction boxes must remain accessible. Don't bury them in your walls or ceiling, or cover them with cabinets.