G2 Gas Fitter Practice Exam

The correct answer indicates that an appliance should be installed with a minimum service clearance of 24 inches. This clearance is essential for several reasons related to safety and maintenance. A 24-inch clearance ensures that there is adequate space around the appliance for proper ventilation, preventing overheating and potential hazards associated with gas appliances.

Additionally, this clearance facilitates easy access for repairs, inspections, and routine maintenance tasks, ensuring that technicians can safely and effectively work on the appliance without obstruction. Compliance with these clearance requirements is crucial for adhering to safety codes and regulations, which may vary by jurisdiction but typically emphasize the importance of providing access and airflow around gas appliances.

It is important to note that the other clearance options, such as 12, 18, and 30 inches, do not meet the widely accepted safety standards that recommend a 24-inch minimum. Options like 30 inches could be unnecessarily excessive in many cases, while 12 inches and 18 inches fall short of the recommended safety margin, potentially compromising safety and functionality.