I don’t know much about how plugs or electricity works, obviously, but I was taught that one side is the “positive”, one side is the “negative”, and the bottom (seemingly quite optional) is the “ground”. It’s odd to me that so few plugs use the “ground”, so it made me curious why it exists, and why it’s optional. Are there any safety benefits to having a “ground”, or safety concerns with not having one? Thank you!
In: Engineering
Things which are ungrounded are double insulated. They have near zero possibility of having a failure which causes any exposed metal parts to have dangerous voltage on them. A large appliance normally has a metal case and it will be grounded for protection.
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