The size and position of signs or panels must comply with whose limitations?

The correct choice reflects that the size and position of signs or panels must comply with the manufacturer's specifications. Manufacturers develop guidelines based on extensive research and testing, which ensure that the equipment operates safely and efficiently. These specifications often include requirements for signage that relay important safety information, operational notices, and user instructions.

While user guides, government regulations, and site policies are also important considerations, they may be secondary to the manufacturer's guidelines. User guides might provide specific instructions, but the original design and safety protocols established by the manufacturer are foundational. Government regulations might dictate certain safety standards, and site policies can be tailored to the unique environment of the site; however, none of these alternatives could effectively replace the primary responsibility set forth by the manufacturer. Adhering to the manufacturer's specifications ensures that users are following the safety protocols intended for that particular equipment, minimizing the risk of accidents and ensuring compliance with safety standards.