US Lighting Compliance: UL, 24V Class 2, FCC, Prop 65 and Customs
US lighting rules distinguish whole-luminaire UL 1598/153 listings from external UL Class 2 24V adapters, FCC Part 15B, Prop 65 and DDP duty.
Part of our lighting compliance reference. Buyers sourcing decorative lamps from Guzhen frequently hear a blanket “Yes, UL certified” when only an internal wire or socket carries a component file number. Below is what US federal, state, and building-code frameworks actually distinguish.
1. Whole-luminaire NRTL listing vs. UL Class 2 external adapter
| Pathway | Applicable standard | What is listed | Where it fits — and where it does not |
|---|---|---|---|
| Listed hardwired luminaire | UL 1598 (fixed luminaires), tested by UL, Intertek (ETL), CSA or another OSHA NRTL | The complete assembled chandelier, sconce or pendant, bearing a serialized holographic NRTL mark | Required by most US municipal electrical inspectors (NEC Article 410 / 110.3(B)) for hardwired commercial, hospitality and inspected residential installations |
| Listed portable luminaire | UL 153 (portable electric luminaires) | The complete cord-and-plug table or floor lamp | Required when a project specification, hotel brand standard, or insurer mandates a listed portable luminaire |
| External UL Listed Class 2 (24V DC) adapter + unlisted low-voltage lamp body | UL 1310 (Class 2 power units) + DOE Level VI efficiency (10 CFR 430) on the wall adapter | Only the plug-in wall adapter is UL Listed. Mains 120V AC stays inside the listed wall unit; the lamp body receives power-limited 24V DC (≤100 VA) | Eliminates 120V AC shock hazard inside the decorative base, but does not make the lamp itself a “UL Listed lamp.” Sellers must state clearly that only the external adapter is listed |
You can verify any genuine UL file number (format E123456) directly in UL Product iQ before purchasing or specifying. Also read our decision guide to 24V low-voltage table lamps.
2. Federal external power supply efficiency (DOE Level VI)
External AC-to-DC wall adapters imported into the United States must meet US Department of Energy Level VI minimum active-mode efficiency and no-load power limits under 10 CFR Part 430, marked with Roman numeral VI inside a circle on the adapter label.
3. FCC Part 15B unintentional radiators
Switching power adapters — and any lamp containing PWM dimming or capacitive touch-control electronics oscillating above 9 kHz — are regulated as unintentional radiators under 47 CFR Part 15 Subpart B. Authorization via Supplier’s Declaration of Conformity (SDoC, 47 CFR §2.909 and §2.1077) requires a responsible party located within the United States who can produce test records upon FCC request.
4. California Proposition 65 (lead in crystal and brass)
Traditional leaded crystal glass contains lead oxide (PbO) as part of the glass matrix, and some free-machining brasses contain trace lead. Under California’s Safe Drinking Water and Toxic Enforcement Act of 1986 (Proposition 65), businesses above the statutory employee threshold exposing California consumers to listed chemicals above safe-harbor levels must display clear and reasonable warnings naming the chemical (such as lead) prior to purchase and on the product or packaging. See our reference on lead oxide in crystal lighting.
5. Country-of-origin marking and US customs entry (post-May 2025)
- Country of origin (19 CFR Part 134): Every imported lamp and its outer retail carton must be legibly and permanently marked Made in China in English.
- End of Section 321 de minimis: Duty-free US de minimis treatment ended for China- and Hong Kong-origin goods on May 2, 2025 (and globally on August 29, 2025). Every parcel now requires formal or informal customs entry, accurate Harmonized Tariff Schedule classification (typically heading 9405), and full payment of applicable base plus Section 301 / IEEPA duties based on true transaction value.
References
Sources
- OSHA Nationally Recognized Testing Laboratory (NRTL) Program, U.S. Department of Labor (OSHA) (accessed )
- 10 CFR § 430.32(w) — Energy conservation standards for external power supplies, eCFR / U.S. Department of Energy (accessed )
- 47 CFR § 2.909 & § 2.1077 — Supplier’s Declaration of Conformity Responsible Party, eCFR / Federal Communications Commission (accessed )
- Proposition 65 Clear and Reasonable Warnings, California OEHHA (accessed )
- 19 CFR Part 134 — Country of Origin Marking, eCFR / U.S. Customs and Border Protection (accessed )