Do I need to test my GFCIs monthly? June 11, 2021 17:39 Updated Follow Yes, you should manually test your GFCIs on a monthly basis. Related articles What is Reset/Lockout? How do I know my GFCI is working? How can I tell if I have a Self-Test GFCI or a Non-Self-Test GFCI? Are Self-Test GFCIs required by the National Electrical Code®? GFCI Trip application note