Thanks everyone.
I missed a question on a practice test and I'm complaining about how the code is written.
Is it just me, or does it sound like the EGC should be connected to electricity?
Be careful with using the word "electricity", because it can be a very vague term.
Think of "electricity" as the name of a subject of study. Try to avoid using it interchangeably with concepts from within the subject of study. It is better to be more specific, using terms like "voltage", "electric charge", "electric current", "electrical energy", and other terms that identify what quantity about the "electricity" we are talking about.
So instead of saying, "copper is a good conductor of electricity", you should instead say "copper is a good conductor of electric current".
The EGC is a conductor that bonds together all equipment made of materials that could (but shouldn't) carry electrical current. It then is routed with the remaining circuit conductors back to the energy source. It will be bonded at EXCLUSIVELY ONE POINT to the grounded conductor of the system. At this point, it will also be bonded to an electrode with is in electrical contact with the ground. The connection between the grounding and grounded conductors shouldn't occur more than once per service/system, otherwise currents could be carried on the EGC.
Note the difference between groundING conductor, and groundED conductor. The groundING conductor (aka EGC) is the conductor that bonds together non-current-carrying metal parts, as a backup path back to the source for unintentional energization of metal parts. The groundED conductor (which in many cases is also the neutral) is a conductor at the same voltage as the EGC, but which also is intended to carry current under ordinary (non-fault) circumstances.
The EGC is either green, green with a yellow stripe, or bare. The groundED conductor is identified by either white or gray.
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