What is a common consequence of not using the correct NFPA table for sizing?

Choosing the correct NFPA table for sizing is crucial for ensuring that a fuel gas system operates effectively. Using an incorrect table can lead to the selection of pipe sizes that do not meet the required flow rates, which means that the appliances connected to the system may not receive enough fuel gas. This can result in the system operating at inadequate fuel gas levels, compromising both performance and safety.

Inadequate fuel gas levels can lead to incomplete combustion in appliances, which can produce harmful emissions, reduce the efficiency of the appliances, or cause them to shut down entirely. Furthermore, operating under these conditions may cause long-term damage to the appliances or create hazardous situations due to potential gas buildup. Proper sizing ensures that the system provides the right amount of gas required for safe and efficient operation.