404.10 Mounting switches and dimmers
What changed in 404.10
The mounting rules for snap switches now also cover dimmers and control switches.
Point by point
- The section now covers dimmers and control switches, not just general-use snap switches.
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Get the whole breakdown
- 2 more points on exactly what changed
- The 2017 rule next to the 2020 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®RevisedYou're here
The mounting rules for snap switches now also cover dimmers and control switches.
2023 NEC®No change
This section did not change from 2020 to 2023.
2026 NEC®Revised
Moved from 404.8 and split into titled parts. Switch handle height can now be measured from finished grade too, not just floors and working platforms.
Open the 2026 page →More 2020 changes in Article 404
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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