Home & DIY

Basic Home Electrical Repairs

Safely replace outlets, switches, and light fixtures, and troubleshoot dead circuits without guessing.

This course is for members

$9 unlocks every course in the library, this one included, plus a credit to build a topic of your own and at least 10 new courses every month.

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What you will learn about Basic Home Electrical Repairs

The 7-day sprint
  1. Safety First and Killing the Power. Every repair starts by turning off the correct breaker and proving with a tester that the wires are dead.
  2. Your Service Panel and Circuit Map. The breaker panel splits your home into separate circuits, and knowing which breaker feeds which room is the foundation of every repair.
  3. Wires, Colors, and Gauges. Wire color tells you the job a conductor does, and wire gauge determines how much current that conductor can safely carry.
  4. Making Connections That Last. Almost all electrical failures in a home are bad connections, so stripping, hooking, and splicing correctly is the core physical skill.
  5. Replacing a Receptacle. Swapping an outlet is a repeatable four-step routine: kill and verify power, photograph and label the wires, transfer them to matching terminals, and test.
  6. Switches, Single-Pole and Three-Way. A switch simply interrupts the hot conductor, and once you understand which wires are the feed and which is the switched leg, replacement is straightforward.
  7. Fixtures, Troubleshooting, and Knowing Your Limits. Diagnose by dividing the circuit and testing where power stops, and hand off anything involving the panel, new circuits, or aluminum wiring.
The 80/20: the 7 concepts that matter most
  • De-energize, then verify
  • The loop: hot, neutral, ground
  • Breakers protect the wire, not you
  • GFCI and AFCI protect people and prevent fires
  • Bad connections cause most failures
  • Troubleshoot by dividing the circuit
  • Know exactly where to stop
The core idea, explained like you are 5

Electricity only does work when it can travel a complete loop out of the panel and back, and every repair, safety device, and failure in your home comes down to controlling that loop.

Then the quiz and the ladder

10 questions that correct you when you are wrong, and beginner, intermediate, advanced levels, each with a practical exercise.