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Safety - In what scenarios does an EGC provide protection (from electric shock, fires, etc.) where a GFCI does not? GFCIs are a poor substitute for grounding. In the absense of grounding a GFCI will only disconnect a fault to the case after your electric shock starts. Hopefully it will do it before the shock kills you but there are no gaurantees. ...


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Your GFCI will let you know about its displeasure, don't you worry. Some surge suppressors do indeed transmit some energy to the EGC -- however, this is not a major concern for typical units as MOVs absorb energy in addition to shunting it. A/V (or other) equipment in metal chassis is not a concern as well -- it is the local equipotential bonding of the ...


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GFCIs are a poor substiture for grounding. Proper grounding should disconnect a fault to the case pretty much immediately. If the case is not grounded A GFCI will only disconnect a fault to the case after your electric shock starts (but hoepfully before the sockhas persisted long enough to kill you) It's better to have a missing ground and a GFCI than to ...


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I suspect that some writers are confusing the old Voltage Operated GFCIs with the new Current Operated GFCIs. The modern type contain a little toroidal transformer that the live and neutral are threaded through. Normally the go and return currents are equal so the transformer does nothing. If the currents are not equal the transformer produces voltage ...



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