cross-posted from: https://lemmy.nz/post/28693796
Check the comments of the original post for the stupidity.
For those of you without an electrical background, the diagram shows the protective earth connected directly to phase, with phase and neutral also joined.
Correctly wired, this would be a three pin plug, with the earth wire connected to the earth pin in the plug, with the other end connected to the metal casing of the appliance. This is a critical safety feature, which will cause the circuit protection to trip in the event a phase wire contacts the metal of whatever this is connected to.
If this was actually done, the most likely outcome is it would trip a circuit breaker, but if the neutral was broken, it would connect phase directly to the casing, and likely electrocute someone.
There’s no live wire in this diagram. There is a section of black wire that is labeled “live”, but it’s just connecting the ground wire to the top prong with no voltage applied. The unlabeled white wire shorts them together. If the white wire was cut, then the top prong would be ground.
This is just a fancy way to short neutral and ground.
Until you plug it in. Then it’s a weird way to test your GFCI.
How? The cord coming from the plug would be wired to an appliance. How is having an unplugged appliance going to test anything?
Well, since this is all bollocks, who’s to say what’s on the other side of the cord…
It’s a plug, not an outlet. I made the same mistake because it’s such an astonishingly bad diagram.
Hot phase comes in from the prong, travels to the screw via black wire, then directly into ground.
Of course, it’s a moot point because you cannot plug this into a North American outlet, the prongs are in the wrong position.
There is no ground plug in this diagram, only phase and neutral. With the ground connected to phase.
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