Custodian Engineer Book Practice Test

The minimum diameter for gas range piping is 3/4 inch. This size is typically specified because it allows for adequate gas flow to the appliance while minimizing pressure drops. A larger diameter is preferable for longer runs of piping or when additional appliances are connected to the same gas line, ensuring safety and performance by providing sufficient gas to the burner.

In residential applications, using piping that is too small can lead to inadequate gas flow, potentially causing the gas range to underperform or even fail to operate under certain circumstances. Therefore, adherence to the recommended minimum diameter is essential for both safety and functionality in a gas range installation.