Learn what you need to know through this lively presentation with NEC expert Mike Holt. Ground fault circuit interrupters (GFCIs) are designed to disconnect power to a branch circuit whenever the unit detects an imbalance of current between the energized conductor and the neutral conductor. Since the 1970s, GFCIs have saved thousands of lives and helped cut the number of home electrocutions in half. In recent years, the NEC has expanded the requirements for these devices to many other areas outside the home....More