[SML] Sympathetic GFI Tripping

[Nigel Worsley]

The circuit that tripped may have a leakage path from the grounded
conductor to the grounding conductor. When the blender pulls a high
curent there will be a small voltage difference built up between the
two, this then causes the leakage path (which is probably quite a high
resistance, not a short) to pass enough current to cause a trip. Take
out the GFI that is tripping and check the resistance to ground.
Anything less than a few hundred kilo ohms is likely to be a fault.
Note that for some equipment there can be a leakage path to the
grounding conductor through interference suppression components, this
shouldn't be enough to cause a trip but would show up on a meter.

Nigel Worsley