1. UL159 for fixed lamps

Covered luminaires include those for use in non-hazardous areas and installed on branch circuits below 600 V. Basically, almost all permanent wiring lamps on the market that cannot be applied to other special lighting standards, such as recessed lamps, wall lamps, ceiling lamps, and street lamps, can be considered to belong to the scope of use of this standard. The content of the standard includes: general requirements, mechanical structure, electrical structure, supplementary requirements for incandescent lamps, supplementary requirements for fluorescent lamps, mechanical testing, electrical testing and other requirements.

2. UL153 for mobile (portable) lamps

Covered luminaires include those used for task lighting or ambient lighting and are connected to branch circuits nominally 120 volts, 15 or 20 amps through the power cord's plug. Basically, as long as the lamps and lanterns use power cords with plugs, and they cannot be applied to other special lighting standards, they basically belong to the scope of use of this standard.

3. UL1993 standard for self-ballasted lamps and their adapters

UL 1993 is a three-in-one standard jointly issued by UL in the United States, CSA in Canada and ANCE in Mexico, and is also an American National Standard approved by ANSI.

UL 1993 covers rated input voltages from low voltage up to 347V, self-ballasted lamps with their own base and their adapters. Self-ballasted fluorescent lamps (energy-saving lamps) and their adapters, LED light bulbs, LED tubes and other LED light source products leading to the North American market are all evaluated by UL 1993. The product classification diagram is shown in the figure below.

4. UL8750 Standard Supplementary Standard for LED Lighting Components

When the light source or illuminant is an LED, the LED components need to be evaluated according to UL8750.

The above four standards are closely related to three dangers: electric shock, fire, and mechanical injury. In layman's terms, a lamp that will not cause electric shock to American consumers, will not cause fire, and will not cause any mechanical damage to American consumers, is a standard lamp that can meet UL certification. LED lighting products that have obtained UL certification can be marked with the UL certification mark and won the trust of American consumers.