I’m currently in a Lutron class, and one of the other electricians mentioned that they recently failed an inspection due to this. I haven’t been able to find any relevant information in the codebook, and neither has he. However, if this is a change in the code, I would greatly appreciate it if someone could provide me with more details.
ChatGPT did provide the following:
The National Electrical Code (NEC) has several sections relevant to tape lighting (LED strip lighting) and its installation in metal channels. Here are the key considerations:
1. Article 411 – Low-Voltage Lighting
• If the LED tape lighting operates at Class 2 power supply (typically 24V or lower), it falls under Article 411, which covers low-voltage lighting systems.
• Class 2 power supplies must be listed and labeled for their intended use.
• Wiring must be protected from physical damage, which could be relevant when placing it inside a metal channel.
2. Article 725 – Class 2 and Class 3 Power-Limited Circuits
• If the tape lighting is powered by a Class 2 power supply, the wiring methods must comply with Article 725 for power-limited circuits.
• Conductor insulation and protection are essential.
3. Article 300 – General Wiring Methods
• If the LED tape lighting is line-voltage (120V), then regular NEC wiring methods apply, meaning:
• Wires inside a metal channel must be rated for use inside raceways (if applicable).
• Box fill and conduit fill rules apply if running wires in enclosed spaces.
4. Article 110.3(B) – Listing and Labeling
• All components, including LED tape lights and metal channels, must be installed according to their UL listing and manufacturer’s instructions.
• Some metal channels are specifically designed for heat dissipation, so using non-listed alternatives may cause overheating issues.
5. Article 410 – Luminaires, Lampholders, and Lamps
• Tape lighting is considered a luminaire under Article 410, meaning it must comply with installation, support, and accessibility requirements.
• 410.104 states that metal parts of luminaires must be grounded if required.
Key Takeaways
• Ensure the tape lighting and metal channel are UL listed for the intended use.
• If using a Class 2 power supply, follow Article 411 and 725.
• If using 120V tape lighting, apply standard wiring rules from Article 300 and 410.
• Prevent overheating by following the manufacturer’s guidelines for metal channel use.
• Grounding and insulation are essential when working with metallic components.
Would you like help finding NEC-compliant products or specific installation details?
