Q. What does the NEC require of conductors used in corrosive locations?
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This answer is based on the 2017 NEC.
A. Conductor insulation must be suitable for any substance to which it may be exposed that may have a detrimental effect on the conductor’s insulation, such as oil, grease, vapor, gases, fumes, liquids, or other substances. See Sec. 110.11 and Sec. 310.10(G).
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