How often must ground-fault circuit interrupters be tested per the latest guidelines?

Ground-fault circuit interrupters (GFCIs) are crucial safety devices designed to protect people from electric shock by interrupting the circuit when they detect a fault current to ground. Based on the guidelines from the National Electrical Code (NEC) and various safety organizations, it is required that GFCIs be tested at least once a year to ensure their proper functioning. Testing them annually allows for early detection of any potential failures or issues, ensuring maximum safety for users.

Regular testing helps confirm that these devices are operational and capable of performing their critical function. If they fail during testing, timely maintenance or replacement can be performed, reducing the risk of electrical accidents. The annual testing timeline is a standard recommendation that aligns with safety practices and helps maintain compliance with electrical safety regulations.