What must RV propane regulators' rated capacity be equal to or greater than?

The rated capacity of RV propane regulators must be equal to or greater than the total Btu/hr input of all appliances. This requirement ensures that the regulator can supply the necessary amount of propane to meet the demands of all connected appliances operating simultaneously.

Each appliance has a specified input in Btu/hr, which indicates how much propane it needs for proper functioning. If the regulator's capacity is below the combined demand of the appliances, it could lead to insufficient gas pressure, resulting in poor performance or even failure to operate. Hence, having a regulator that meets or exceeds the total appliance demand is crucial for safe and efficient propane system operation in an RV. Proper sizing prevents issues such as pressure drops and ensures that all appliances receive adequate fuel for optimal performance.