1000 BTU ~ 1 CFH  
  Scenario 1, Full gas load, full electrical load Quantity BTU Rating of Each Appliance Total BTU Min Pressure, inches Water Column Max Pressure, inches Water Column Notes  
  Water Heater 1          40,000       40,000   10.5  
  Furnace 1          80,000       80,000   10.5  
  Oven, burner 1            4,500        4,500   10.5  
  Oven, burner 1            9,200        9,200   10.5  
  Oven, burner 1            9,200        9,200   10.5  
  Oven, burner 1          10,000       10,000   10.5  
  Oven, oven 1          16,000       16,000   10.5  
  Oven, broiler 1          12,000       12,000   10.5  
  Clothes Dryer 1          22,000       22,000 3.5 10.5  
  Gas Fireplace 1          25,000       25,000 3.5 10.5  
  Standby Generator 1        240,000     240,000 11 14 Generator, Full load
      Total     467,900  
     
  Scenario 2, Full gas load, 1/2 electrical load Quantity BTU Rating of Each Appliance Total BTU Min Pressure, inches Water Column Max Pressure, inches Water Column Notes  
  Water Heater 1          40,000       40,000   10.5  
  Furnace 1          80,000       80,000   10.5  
  Oven, burner 1            4,500        4,500   10.5  
  Oven, burner 1            9,200        9,200   10.5  
  Oven, burner 1            9,200        9,200   10.5  
  Oven, burner 1          10,000       10,000   10.5  
  Oven, oven 1          16,000       16,000   10.5  
  Oven, broiler 1          12,000       12,000   10.5  
  Clothes Dryer 1          22,000       22,000 3.5 10.5  
  Gas Fireplace 1          25,000       25,000 3.5 10.5  
  Standby Generator 1        149,000     149,000 11 14 Generator, 1/2 load
      Total     376,900  
 
  Scenario 3, Typical gas load, Typical electrical load Quantity BTU Rating of Each Appliance Total BTU Min Pressure, inches Water Column Max Pressure, inches Water Column Notes  
  Water Heater 1          40,000       40,000   10.5  
  Furnace 1          80,000       80,000   10.5  
  Oven, burner 1            5,000        5,000   10.5  
  Oven, burner 1            9,200        9,200   10.5  
  Oven, oven 1          16,000       16,000   10.5  
  Clothes Dryer 1          22,000       22,000 3.5 10.5  
  Gas Fireplace 1          25,000       25,000 3.5 10.5  
  Standby Generator 1        120,000     120,000 11 14 Generator, typical load
      Total     317,200  
 
  Scenario 4, Typical gas load, Typical electrical load Quantity BTU Rating of Each Appliance Total BTU Min Pressure, inches Water Column Max Pressure, inches Water Column Notes  
  Water Heater 1          40,000       40,000   10.5  
  Furnace 1          80,000       80,000      
  Oven, burner 1            5,000        5,000   10.5  
  Oven, burner 1            9,200        9,200   10.5  
  Oven, burner 1          10,000       10,000   10.5  
  Clothes Dryer 1          22,000       22,000 3.5 10.5  
  Standby Generator 1        120,000     120,000 11 14 Generator, typical load
      Total     286,200