fish/pull wires to panel box
I am upgrading the electrical service to my oven... It is currently 40 amp 220 3-wire; I need 50 amp 220 4-wire.
What is the easiest way to run the new 6/3? The panel box is in my utility room and all of the wires are behind the drywall. Is there anyway that I can connect the new wire to the old wire under the house and then pull it up? I guess that wouldn't work because of the staples holding the old wire inside the wall...