Real Knowledge - Verified

The launch poll

This question is the electrical docket's top finding — the GFCI test doctrine (ED-1, Limb B: the manufacturer's test button is the test; plug-in testers are not listed for testing GFCIs) — put to living shops. Tallies are banked as dated attestation data: a poll moves a claim's shop-lane weight by +2 at most, and never counts as an outcome.

Is a plug-in tester a valid way to test a GFCI?

Reference only. Compiled from the cited official sources as of the date shown; adoptions and rules change. Confirm with the authority having jurisdiction before designing or permitting work.