Easy DIY · Electrical outlet inspection

How to check a TEST/RESET GFCI outlet safely

Use the built-in TEST and RESET controls to check a GFCI outlet without opening or modifying wiring.

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A North American GFCI outlet shuts off power during certain ground faults. ESFI recommends testing its built-in TEST and RESET mechanism using a small lamp. Outlet designs and electrical codes vary internationally; use the instructions for your installed model and local regulations.

Your try-it-at-home checklist

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Identify a GFCI outlet with TEST/RESET buttons or its breaker equivalent, and read the instructions for that exact model.
Test only with dry hands and a dry floor. If you see cracks, scorching, moisture or smell burning, do not touch the outlet; get professional help.
Follow the instructions to press RESET, then plug in a small light so loss of power is clearly visible.
Press TEST and verify that the light goes off. Stop if the response does not match the product instructions.
Press RESET again and verify that the light returns. Do not use an outlet that fails or trips repeatedly.
Follow the product's test interval and record the result. Never open wiring, bypass protection or attempt electrical repairs; call a qualified electrician.

Your try-it-at-home checklist

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