what type of plug is needed for an electric dryer
of 08. Making Your Dryer Work with a 4-Prong Cord Amazon.com Due to changes in the National Electrical Code (NEC), wiring for electric clothes dryers changed somewhat around the year 2000. Before the change, dryers used 3-prong cords that plugged into 3-slot electrical outlets (receptacles). Since the change, dryers use 4-prong cords for 4-slot outlets. Newly installed dryer receptacles must be 4-slot. However, it's still legal to use a dryer with a 3-prong cord and an older-style receptacle.