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by smcl 1009 days ago
How can, say, a cleaner tell the prong configuration on a plug when it's plugged in and not visible?
1 comments
heywhatupboys 1007 days ago
none, but they sure cant plug in their vacuum.

hispital ones are red wires

link
smcl 997 days ago
Right but the point isn’t to stop something being plugged in, it’s to stop something unplugged
link