600.5 Sign branch circuits
What changed in 600.5
Two exceptions were added, including one that lets time clocks and photocontrols share the sign circuit.
Point by point
- Main rule unchanged: each pedestrian-accessible commercial building or occupancy needs a sign outlet at each tenant entrance, on a dedicated 20-amp minimum circuit.
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- 3 more points on exactly what changed
- The 2020 rule next to the 2023 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
Sign outlet rules were clarified, staff and delivery doors don't need one, and new marking rules apply to the sign disconnect.
Open the 2020 page →2023 NEC®RevisedYou're here
Two exceptions were added, including one that lets time clocks and photocontrols share the sign circuit.
2026 NEC®No change
This section did not change from 2023 to 2026.
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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