342.10 IMC uses
What changed in 342.10
A new informational note gives examples of corrosion protection for IMC, such as galvanizing and PVC coating.
Point by point
- The corrosive environment part of the rule, 342.10(B), picked up a new informational note.
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Get the whole breakdown
- 2 more points on exactly what changed
- The 2023 rule next to the 2026 rule, side by side
- Why it changed
- What to do and check on the job
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This section across NEC® editions
2020 NEC®Revised
IMC is now expressly allowed where it will be exposed to severe physical damage. Rigid metal conduit got the same new allowance.
Open the 2020 page →2023 NEC®No change
This section did not change from 2020 to 2023.
2026 NEC®RevisedYou're here
A new informational note gives examples of corrosion protection for IMC, such as galvanizing and PVC coating.
More 2026 changes in Article 342
This is a plain-English summary, not the NEC®'s exact wording. Always check the full section in the NEC® edition your area has adopted, plus any local amendments.
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