NM Electrical Inspector (General) Practice Questions - New Mexico CID Electrical Inspector (General) Examination Exam

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Ungrounded conductors of a 20-ampere circuit are increased from 12 AWG copper to 8 AWG copper because of voltage drop. The overcurrent device remains 20 amperes. Under 2020 NEC 250.122(B), what equipment grounding conductor action should the inspector require?

Increase the copper equipment grounding conductor proportionately from 12 AWG to 8 AWG, unless a qualified person sizes it to provide an effective ground-fault current path under the 250.122(B) Exception Leave the copper EGC at 12 AWG in every voltage-drop case because Table 250.122 is based only on the 20-ampere breaker Omit the EGC because the ungrounded conductors were upsized Require a 3/0 AWG copper EGC

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