In fact, you do. This is a summary of the common specifications for industrial head protection for use where there may be an electrical hazard. That's why we say standards are the shorthand of commerce . They are a common language for the marketplace. Standards establish compatibility of components and systems , and make it possible to interchange products from different manufacturers safely and effectively.
Standards establish a level of performance for a product, system or process.
For PPE, this is the protection the product is designed to provide. Standards provide a method for verifying that a product is suitable for its intended purpose. And they serve the public good, by establishing levels of safety, health, and environmental protection. Standards are commonly used as the basis for government regulation. When issued as final rules, they are the law of the land.