Which of these terms refers to the total maximum input of appliances served in terms of gas flow?

The term that refers to the total maximum input of appliances served in terms of gas flow is known as maximum input. This concept is crucial in understanding the capacity requirements for gas installations, as it indicates the highest volume of gas that can be safely and efficiently supplied to all appliances at peak demand.

Maximum input is essential for ensuring that gas systems are appropriately sized and can handle fluctuations in demand without risking safety or operational efficiency. When designing or evaluating a gas system, knowing the maximum input allows for proper equipment selection, ensuring that everything from pipelines to appliances can accommodate the required flow of gas without any issues.

In contrast, average input refers to the typical amount of gas used under normal conditions, minimum input would relate to the least amount required for operation, and peak input may be confused with maximum input but typically indicates an extraordinary demand period. Thus, maximum input is the most relevant term describing the total capacity needed when all connected appliances operate simultaneously at their highest settings.