What it is
Blog post addressing common NEC code questions electricians have about LED lighting installations. Distinguishes Class 2 and Class 3 power-limited circuits under Article 725, and introduces Class 4 as a newer category specifically for fault managed power systems.
Why it matters
Electrical contractors need to understand how Class 4 differs from traditional Class 2/3 power-limited circuits when designing and installing fault managed power systems. This educational content helps bridge the knowledge gap as the newer Class 4 category gains adoption in the field, affecting code compliance and installation practices.
Evidence from source:
- Class 2 and Class 3 circuits remain in Article 725 and are power limited
- Class 4 is a newer category introduced for fault managed power systems
Links
- Canonical source: https://www.aspectled.com/blog/post/nec-code-questions-led-lighting/?srsltid=AfmBOopIZaazgmsWaOaqn97ZLrn1vfoWfPz0cYn4TBn7R8eqPklrFTX7
- Topic: /topics/code-standards/
- Topic: /topics/safety-model/
Open questions
- What specific Article 725 requirements differ between Class 4 and Class 2/3 circuits?
- What LED installation scenarios would trigger the need for Class 4 vs traditional power-limited circuits?