This post What Happens if You Use a 120V Device on 240V & Vice Versa? appeared first on ELECTRICAL TECHNOLOGY. Can We Operate a 120V Appliance on 240V Supply, or a 240V Equipment on 120V Supply? It is always recommended to operate appliances, switches, and outlets at their rated voltage and current. Using a device on a voltage or current level different from its rated specification may violate electrical codes and can lead to serious … Visit the What Happens if You Use a 120V Device on 240V...