250.118(4) allows EMT as a means of equipment grounding.

Now, if I also install a equipment grounding conductor in that EMT, as many of us do, and I increase the ungrounded conductor size to compensate for voltage drop or for derating purposes, do I still have to increase the size of that equipment grounding conductor proportionately according to the circular mil area of the ungrounded conductors as described in 250.122(B) ?

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