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InterNACHI » "The Inspectors Journal™"

New article on GFCIs

August 10th, 2010

Did you know that GFCIs were first developed in the 1950s for use in South African mines?  They’ve undergone many technological upgrades over the decades.  The NEC requires them in new construction to protect against electrical shock.  Read all about it in GFCIs.

This blog entry was posted by Nick Gromicko.

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