Join Date: Oct 2001
Location: Colorado Springs
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The installation of GFI may be because of the original use of the area. Is this a basement? Did it originally have a bare concrete floor?
If you plug a surge-protected outlet strip into a GFI outlet, you risk tripping the GFI when a surge is absorbed by the surge protector. GFI detects any current imbalance on the "hot" and "neutral" power lines. The imbalance is assumed to be caused by a "path" to ground -- the amount of power 'from' the wall outlet is not exactly equal to the power back 'to' the wall on the other wire.
If there is a spike on the power line, the surge protector may absorb the spike by (very briefly) shunting the line to ground. The GFI circuit may sense the current as a short to ground and "protect" everyone by tripping itself.