OK, how about this one.
I finish cleaning my external return pump. I notice a funny sound after I turn it back on. I poke my nose until its two inches away from the pump and start tapping at the impeller cover when all of a sudden - pssssssshhhhhhhhhh!!!!!!!!!!!!
I get a face full of water and start flailing around like a decapitated chicken trying to stop the water. I instinctively reach around to the power bars to turn off the pump. I finally do so after a lot of groping. It's only then do I realize that I am in a very large puddle of saltwater surrounded by a rat's nest of electrical wiring and appliances. The power bars are soaked, I am soaked, everything is soaked. Then I begin to notice the silence. Everything's off. Why? Because the GFCI has tripped exactly as it was supposed to.
The impeller cover wasn't properly seated so when I tapped at it, it gave way.
I'm not dead, but there's a chance I wouldn't be typing this had it not been for that $10 GFCI outlet.
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