Now I'm going to throw out an analogy here, and don't go ape on me if your opinion might be different.
We bond to keep the potentials the same. Which makes sense to bond a gas,(although I have gripes about how I am being made to do it lately.) seeing that we bond water, and hot water. (If metalic) We bond the neutral to ground, because we want to keep the potential low there too. (Relitive to earth) And, so we don't end up with a floating neutral causing over-voltage in every multi-wire circuit. And we ground because we want to (essentially bond) the exposed equipment surfaces and other bonded items also at the same potential as the earth. We want to keep everything the same and low, voltage potential wise, Right?
So if all of this is true, and EVERY faucet and stove out there is metal, why do we not bond everything andban plastic piping sytems?
