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SESK: Stuff Everyone Should Know · sesk.info/elec-gfci-test-monthly

At a minimum, how often should you test a GFCI?

Test every GFCI at least monthly.

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  1. At least once a month ✔
  2. Once a year
  3. Only after a trip

Why: Pressing the test button should cut power, and reset should restore it. A GFCI that no longer trips can't protect you.

Huh, didn't know that: CPSC also advises a portable GFCI whenever operating electrically powered garden equipment.

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Why did the fuse feel calm? It had blown off some steam.
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References

Answer: At least once a month. Pressing the test button should cut power, and reset should restore it. A GFCI that no longer trips can't protect you.

  1. CPSC consumer safety document www.cpsc.gov/s3fs-public/099_0.pdf
    At least once a month
    Checked 2026-10-10.

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