Technical Articles

What is UL 758?

UL 758 is a safety standard that applies to electrical wires, cables, and flexible cords used in various applications. The "UL" stands for Underwriters Laboratories, a global safety certification company, and the standard ensures that these products meet specific safety requirements.

Scope of UL 758

The UL 758 standard covers a wide range of electrical wires and cables, including those used in appliances, machinery, and electronic equipment. It also includes flexible cords used for portable devices and power supply cords for household appliances.

The standard provides guidelines for evaluating factors such as insulation integrity, conductor materials, current-carrying capacity, and resistance to environmental conditions. It aims to ensure that these products can safely conduct electricity without posing any hazards.

Compliance and Certification Process

Manufacturers need to comply with the UL 758 standard to sell their products in markets that require UL certification. The process involves rigorous testing and evaluation by authorized laboratories. These labs assess the products to determine if they meet the specified safety criteria. If approved, the manufacturer can apply the UL mark on their product, indicating compliance with the standard.

UL 758 certification provides confidence to consumers and regulatory authorities that the products have undergone thorough testing and meet the necessary safety benchmarks. This certification is crucial for manufacturers to establish trust and build a reputable brand in the marketplace.


In conclusion, UL 758 is a safety standard that ensures electrical wires, cables, and flexible cords are manufactured and tested to meet specific safety requirements. Compliance with this standard is essential for manufacturers in order to obtain UL certification, which indicates that their products are safe for use. UL 758 plays a critical role in maintaining electrical safety standards and promoting consumer confidence.

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