I have an existing junction box and currently 1 source from the basement going in, and one source coming out and that goes to a wall switch.
If I want to connect a second wire to come from that junction box, would I just attach all hot and all neutral wires together in the box? In my head it sounds like this wouldn't be a complete loop, but maybe I am just overthinking it.
So one source going into the box and then two wires coming out of it, each going to their own box in the walls below.
Anyone have a diagram for this? Thank you!