110.3 Using equipment the way it's listed
What changed in 110.3
Following product instructions now has to result in a code-compliant install, and a cybersecurity note was added.
Point by point
- 110.3(B) now makes clear that following the instructions has to produce a code-compliant result.
The full lesson is in the Pro Version
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
One membership unlocks every NEC® change lesson for 2020, 2023 and 2026, plus every video, quiz, flashcard and the Testing Center.
Checking your membership…
This section across NEC® editions
2020 NEC®No change
This section did not change from 2017 to 2020.
2023 NEC®Revised
Cybersecurity for network-connected life safety equipment is now addressed, and instructions for identified equipment must be followed.
Open the 2023 page →2026 NEC®RevisedYou're here
Following product instructions now has to result in a code-compliant install, and a cybersecurity note was added.
More 2026 changes in Article 110
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.
NEC® and National Electrical Code® are registered trademarks of the National Fire Protection Association (NFPA). Electrical Exam Coach is not affiliated with or endorsed by NFPA.
Find it faster on test day