UL 498:2004 is a standard developed by Underwriters Laboratories (UL) that specifies the requirements for plugs and receptacles, commonly known as electrical outlets, used in North America. This technical article aims to explain the key aspects of UL 498:2004 and its importance in ensuring electrical safety.
Scope of UL 498:2004
The UL 498:2004 standard covers various types of plugs and receptacles, including polarized, non-polarized, grounding, and isolating types. It outlines the requirements for their construction, performance, and testing. The standard also defines criteria for marking and instructions to be provided with these devices.
Key Requirements of UL 498:2004
UL 498:2004 sets out specific requirements to ensure the safe and reliable operation of plugs and receptacles. These include:
- Temperature rise limits to prevent overheating
- Dielectric voltage withstand test to verify insulation strength
- Endurance testing for durability under normal use conditions
- Impact resistance to withstand mechanical shocks
- Strain relief requirements to prevent wire pull-out
- Grounding continuity to ensure proper grounding connection
- Marking and labeling guidelines for clear identification
Importance of UL 498:2004
Compliance with UL 498:2004 is crucial for manufacturers, distributors, and users of plugs and receptacles in North America. Adhering to this standard ensures that these devices meet stringent safety requirements and minimize the risk of electric shock, fire, or other hazards caused by faulty electrical connections. By using UL 498:2004 compliant products, consumers can have confidence in the safety and reliability of their electrical systems.
Nina She