What must be available on the job site at the time of inspection for equipment and appliances?

The correct answer is that manufacturer's installation instructions must be available on the job site at the time of inspection for equipment and appliances. These instructions provide essential guidelines for the correct installation, operation, and maintenance of the equipment, ensuring compliance with safety standards and manufacturer specifications. Adhering to these installation instructions helps to prevent operational issues and potential hazards, as they include critical information about the proper setup and any safety precautions that must be observed.

Having the manufacturer's installation instructions readily accessible during an inspection allows inspectors to verify that the equipment has been installed according to the specified requirements. This is crucial for confirming that the setup won't lead to malfunctions or unsafe operating conditions, which could endanger users or lead to property damage. Therefore, these documents play a vital role in maintaining safety and functionality on the job site.