A dryer was moved and the people put a junction box in its place. Can I run the new line by attaching to the old one using the junction box. They just disconnected it and turned off the breaker. I would like to reuse the line for another item requiring 240 power in my garage. Can this be done and still follow code?
The answer is yes if the conductors meet code.you already turned off, Remove The receptacle install a clamp in the old box for the new wire to feed the new the receptacle If Romex the putter insulation 1/4” inside the clamp and 6” wire minimum. Use appropriate sized wire-nuts and install a blank cover, put the new box where you want it , bring the wire in make sure to have at least 6” and the putter covering or insulation inside the box by 1/4” reconnect your receptacle and you are ready to plug in. Electric driers are usually #10 wire on a 30 amp breaker. Can be larger but that is normal. I usually use 4 square metal boxes with a 30 amp 1/2” raised cover . The receptacle should be a 4 wire by today’s code well and the last few cycles. Good luck.