According to NFPA 54 9.8.2, how should holes through which wires pass be treated?

When addressing how holes through which wires pass should be treated per NFPA 54, it is essential to focus on safety and efficiency in installation. Sealing these holes is crucial to prevent drafts, which can lead to energy loss and inefficiencies. Drafts can also introduce unwanted airflow that may carry contaminants or moisture into spaces where gas appliances are located, possibly affecting their operation and safety.

Sealing these openings helps maintain the integrity of the building envelope and can reduce heating and cooling costs by ensuring that air does not flow in and out of the structure unnecessarily. Proper sealing also indicates a meticulous approach to installation that adheres to safety standards, promoting overall reliability and compliance with regulations.

Options that suggest leaving holes open for ventilation, marking them for future reference, or covering them with a protective cap do not address the potential risks associated with unsealed openings. These practices could contribute to safety issues and are not aligned with the procedural guidelines set forth in the NFPA standards. Thus, sealing holes through which wires pass is the appropriate measure to ensure the system's integrity and safety.