500.8 Hazardous location equipment
What changed in 500.8
New 500.8(G) requires the ignition risk from LED and laser light sources to be considered in Division-classified locations.
Point by point
- New 500.8(G) covers equipment that gives off optical radiation, such as LED and laser sources.
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- 3 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
New 500.8(G) requires the ignition risk from LED and laser light sources to be considered in Division-classified locations.
2023 NEC®Revised
Operating temperatures in Class III areas are addressed, and laser and optical fiber rules were clarified.
Open the 2023 page →2026 NEC®Revised
Equipment that gives off optical radiation is addressed.
Open the 2026 page →More 2020 changes in Article 500
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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