514.11 (A)

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codequestion

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NEC 514.11 (A) says all conductors incldung grounded conductor shall ne provided means to open simultaneously. I understand grounded conductor is neutral however when it says all conductors do they also mean equipment grounding conductor?

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codequestion said:
NEC 514.11 (A) says all conductors incldung grounded conductor shall ne provided means to open simultaneously. I understand grounded conductor is neutral however when it says all conductors do they also mean equipment grounding conductor?

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Since the EGC does not carry normal circuit current, it is not considered a circuit conductor for this purpose.
That said, interrupting the EGC could only be considered legal if all power from any and all circuits using that EGC is disconnected.

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GoldDigger said:
Since the EGC does not carry normal circuit current, it is not considered a circuit conductor for this purpose.
That said, interrupting the EGC could only be considered legal if all power from any and all circuits using that EGC is disconnected.

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How would one interrupt the equipment grounding conductor if it were the metal conduit?

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I dont know perhaps install bonding jumper breaker that bonds the conduit? Not sure but good question doesnt apply to my situation.

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codequestion said:
I dont know perhaps install bonding jumper breaker that bonds the conduit? Not sure but good question doesnt apply to my situation.

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Haha the question was rhetorical. One would never interrupt equipment grounding conductor.

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Because the "grounded conductor" is a normally current carrying conductor, it can have a raised voltage over the equipment ground conductor - this increases the chance of it arcing if it touches anything at ground potential - not a good thing to have in a hazardous location environment. I believe this is why they want to have a switch in the grounded conductor in this situation. Is not so much a problem for normal operation but you do want that grounded conductor disconnected as well as the ungrounded conductors if you are going to take things apart to work on something.
 
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