What does a GFCI outlet do?
AnswerCuts power when it detects a ground fault
GFCI outlets shut off power quickly to help prevent electric shock.
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8 fact-checked facts about home care, maintenance and household know-how, each with the reason behind it. 4 more are in today's round and join this page after it closes.
The basics
What is caulk mainly used for?
AnswerSealing gaps and joints
Caulk seals gaps around tubs, windows and trim against air and water.
Going deeper
What does insulation's R-value measure?
AnswerResistance to heat flow
Higher R-values mean better resistance to heat transfer.
What is the standard stud spacing in U.S. wood-frame walls?
Answer16 inches on center
Studs are usually 16 inches apart, center to center.
Flushing a tank water heater mainly removes what?
AnswerSediment
Minerals settle as sediment at the bottom of the tank.
Why do homes need carbon monoxide alarms?
AnswerThe gas is colorless and odorless
You cannot see or smell carbon monoxide, so an alarm is needed to detect it.
Expert level
What size is a standard sheet of drywall in the U.S.?
Answer4 by 8 feet
The most common drywall sheet measures 4 by 8 feet.
Which U.S. agency launched the ENERGY STAR program in 1992?
AnswerEnvironmental Protection Agency
The EPA started ENERGY STAR in 1992.
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