this post was submitted on 27 Jan 2024
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It will work either way, there is no polarity when a circuit is made.
There is polarity before a circuit is made. One wire is live, one wire is a neutral return.
For a basic heater, plugged in one way will have the heating element always live, and the other way it will only be live when it is switched on and a circuit is made.
One is definitely safer than the other.
Almost all devices that switch mains power, have both the live and neutral connected to the switch.
Almost...