Is there a way without using junction boxes to simply splice in additional length of 12/2 NM-B cable? Can I use twist caps?
I'm putting in a dog door and as it so happens, there is some 12/2 right in the way of the location I've chosen. There's no additional slack in the cable, and I don't want to rip up more drywall than I have to. I'm tempted to just cut it and splice in an additional foot or two with twist caps to get it out of the way. I don't know if this is safe or legal. Do I need to get junction boxes? Attached some pictures for fun.
Also, there is a 1-gang electrical outlet box that is going to the outside. I'm moving that up a bit.