The Circuit Detective

Understand your system How things go wrong

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GFI-GFCI problems 3-way switches Open hot, neutral, ground Is a breaker tripped? AFCI breaker (arc-fault) Replacing outlets and switches Signs of bad connection 2-circuit cables Bad main service wire

Choosing a tester Outlet tester readings Testers chart Neon testers How to test for what

Wiring basics Special control devices Appliances Bulbs, receptacles, etc. Various Tips Melted wires Electrical myths Rodent damage Tips for electricians UK vs US wiring Articles by Laurence

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