Introducing the NEMA 14-30 Y splitter. Now you can leave your car charger (or other appliance) and electric dryer plugged in at the same time! This gives you greater convenience and reduces wear on the electrical outlet from repeated plugging in and unplugging. The only precaution is you should be careful to avoid charging your car and using your dryer at the same time - you can only safely use one or the other but not both.