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Make: Technology on Your Time Volume 29
book

Make: Technology on Your Time Volume 29

by Mark Frauenfelder
January 2012
Intermediate to advanced content levelIntermediate to advanced
176 pages
7h 37m
English
Make: Community
Content preview from Make: Technology on Your Time Volume 29
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WELCOME

By Dale Dougherty

Experiment On Yourself

CHARLES DALZIEL, A UC BERKELEY professor who studied electricity’s effect on animals and humans and reputedly did a fair amount of testing on himself, realized that most accidental electrocutions happened because of a ground fault in home electrical circuits. So he set out to develop the Ground Fault Circuit Interrupter (GFCI), which monitors the current and instantly trips it when detecting an imbalance of as little as 5mA, a level his tests determined to be harmless. Dalziel patented the device in 1965, and the GFCI was later incorporated into the National Electrical Code, requiring GFCI outlets ...

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Make: Technology on Your Time Volume 28

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Publisher Resources

ISBN: 9781680455991Errata Page