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2. Three-prong adaptor - Wikipedia

   en.wikipedia.org/wiki/Three-prong_adaptor

   The grounding wire would be diverted around the adapter to reach the faceplate screw above it. However, this ground-wire style of cheater plug was discontinued when it was noted that a loose unattached grounding wire could accidentally become connected to the "hot" blade of a nearby outlet, potentially leading to electric shock. As an ...

3. Electrical wiring in North America - Wikipedia

   en.wikipedia.org/wiki/Electrical_wiring_in_North...

   Two-wire outlets having no grounding conductor may be protected by a GFCI or one upstream of the receptacle and must be labelled "No Equipment Ground" and "GFCI Protected". Most GFCI receptacles allow the connection and provide GFCI protection for down-stream connected receptacles.

4. Residual-current device - Wikipedia

   en.wikipedia.org/wiki/Residual-current_device

   A residual-current device (RCD), residual-current circuit breaker (RCCB) or ground fault circuit interrupter (GFCI) [a] is an electrical safety device that interrupts an electrical circuit when the current passing through a conductor is not equal and opposite in both directions, therefore indicating leakage current to ground or current flowing to another powered conductor.

5. Bootleg ground - Wikipedia

   en.wikipedia.org/wiki/Bootleg_ground

   A receptacle with a bootleg ground. In building wiring installed with separate neutral and protective ground bonding conductors (a TN-S network), a bootleg ground (or a false ground) is a connection between the neutral side of a receptacle or light fixture and the ground lug or enclosure of the wiring device. [1]: 287

6. National Electrical Code - Wikipedia

   en.wikipedia.org/wiki/National_Electrical_Code

   The NEC also permits grounding-type receptacles in non-grounded wiring protected by a GFCI; this only applies when old non-grounded receptacles are replaced with grounded receptacles, and the new receptacles must be marked with 'No equipment ground' and 'GFCI Protected' . 240 V receptacle faces. The 1999 Code required that new 120/240 volt ...

7. 5 Mistakes You're Making When Hanging Christmas Lights ... - AOL

   www.aol.com/lifestyle/5-mistakes-youre-making...

   Without proper planning and know-how, a well-intentioned light display could end up more tacky than trendy—or worse, dangerous. ... (GFCI) outlet for extra safety. ... Install an automatic timer ...