Open Ground question
Hi all, I have been having a problem with plugging into the shore power at our storage facility. They have all circuits run through GFCI outlets on the pole. When we plug in and we are not running any...
Forum Discussion
Harvard wrote:
For the record, DC resistance readings will not detect stray capacitance leakage current (AC leakage).
correct, nor will it catch an inductive path to ground from a motor.
And motors are notoreous for tripping a GFI. That is why NEC does not require that certain kitchen circuits have a GFI. For example a fridge or freezer does not need to be on a GFI, so you can put a GFI outlet downstream of the fridge for the other kitchen outlets. Don't want to go on vacation and discover the fridge or freezer tripped the GFI and spoiled the food.
However often a resistance in the 10's or 100's of Kohms is an indicator of a AC leakage path through something that normally is a very high resistance.
