Some additional questions I have to further understanding:
Ships don’t have ground, but why couldn’t electricity on a ship ground to the ocean the same way houses ground to the earth?
A structure will have a grounding rod dug into the earth. Does the dirt, soil, and rock composition that the structure is built on affect how willing current is to use the path?
In: 77
Ever hear the expression “I don’t have to outrun the bear, I just have to outrun you”?
If an electrical device shorts in a dangerous way, the *wired* connection to ground is a more attractive path than the *you* connection to ground. It’s going to ground other way, just a matter of the path it takes.
Also, you say Electrical Ground but your question seems to be about Earth Ground, which is probably why none of the other answers touched on this explanation. They are not the same thing, though they are often connected together. And regarding the ship question, they use Chassis Ground which serves basically the same purpose as Earth Ground but isn’t as good.
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