When a code provision is less restrictive than the conditions of the listing, which should be followed?

When a code provision is less restrictive than the manufacturer's instructions, the manufacturer's instructions should be followed. This is because manufacturers design their products with specific guidelines to ensure safety and performance. Their instructions take precedence in cases where local codes are less stringent, as these are based on the unique characteristics and potential hazards associated with their specific products.

Following the manufacturer’s instructions helps ensure that the equipment performs as intended and maintains compliance with safety standards. This principle emphasizes the importance of relying on the expertise of the manufacturer and adhering to their recommended practices, rather than solely depending on potentially outdated or less rigorous code provisions. This practice ultimately protects both the end-users and the integrity of the installation by ensuring that the equipment is utilized in the manner for which it was designed.