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Distribution and use of electricity throughout the home. Electrical standards vary greatly worldwide, so you need to provide your location in your question or profile to ensure you get answers that are relevant to you. Posting photographs of wiring junctions or drawing a wiring diagram and posting it is also highly recommended.

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What would happen if I used a 3 speed fan control with a 4 speed fan?

Make sure you cap the unused motor tap or cover it with electrical tape to prevent it from shorting to any metal in the fan housing, as that wire will be energized when the motor is running. …
Andrew P.'s user avatar
  • 177
4 votes

Where should I NOT use a GFCI or AFCI?

A GFCI cannot be used where two circuits have a shared neutral line. It is rare, and probably violates all versions of the National Electric Code since 1970, or earlier, but I encountered a situation …
Andrew P.'s user avatar
  • 177
1 vote

Troubleshoot motion detector that turns on for only a few seconds at a time

PIR motion sensors often have a "test" feature that allows them to turn on the light that is being controlled for a few seconds while performing a walk test in front of them, even in broad daylight. M …
Andrew P.'s user avatar
  • 177