Which of the following is not an item of inspection of electrical installations contained in the regular automatic inspection criteria for stackers?

The inspection criteria for electrical installations on stackers typically focus on components that are crucial for the safe and effective operation of the equipment. Items such as circuit breakers are essential for preventing electrical overloads and ensuring that the system can be safely shut off in case of a fault. Similarly, power cords need to be inspected for damage or wear to ensure they can safely conduct electricity without posing hazards.

Sensors, on the other hand, play a vital role in the operation of stackers by detecting position, load, and other operational parameters. Ensuring these are functioning correctly is crucial for the safe operation of the machinery.

The distributor, while a significant component in larger electrical systems, is not typically part of the regular automatic inspection criteria specifically tailored for stackers. This is likely because stackers may operate with simpler electrical systems where the distribution functions are integrated within the equipment’s design, thus making it less critical for regular inspection compared to the other listed components.