Originally Posted By: jtedesco
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Your reply clears up the questions I had, and your methods include some special tests since it is evident that you are aware of the need for an equipment grounding conductor.
It sounds like you found some equipment that was not properly grounded.
The refrigerator scenario is a real one and the Home Inspector should be careful when they are discovered. A recommendation to the buyer seems appropriate.
I am sure you know that the use of an individual green equipment grounding conductor is permitted to be installed when "otherwise run with" the existing circuit.
Equipment Fastened in Place or Connected by Permanent Wiring Methods (Fixed) ? Grounding
"the equipment grounding conductor is permitted to be run separately from the circuit conductors."
"Nongrounding Receptacle Replacement or Branch Circuit Extensions. The equipment grounding conductor of a grounding-type receptacle or a branch-circuit extension is permitted to be connected to any of the following:
Any accessible point on the grounding electrode system
Any accessible point on the grounding electrode conductor
The equipment grounding terminal bar within the enclosure where the branch circuit for the receptacle or branch circuit originates
For grounded systems, the grounded service conductor within the service equipment enclosure
For ungrounded systems, the grounding terminal bar within the service equipment enclosure"
Sometimes those old clunkers are still working and are used for the extra refreshments during sports activities!
Joe Tedesco, NEC Consultant