they are connected to the same thing “in the end”, but are implemented dfferently so one completes the action of the other.
basic protection is “ground” that allows the easiest path for electricity to escape, instead of going through you body it will takes that path. but this is unsufficient.
neutral goes through a breaker that trips if the difference between live and neutral is over a threshold. when electricity escape through ground, it creates such a difference because it is then ot going through neutral.
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