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Generator Sizing

This calculator is designed to estimate the generator size required. The generator should be oversized to compensate for starting motor loads and other items which may have been forgotten. Always consult a sales person prior to purchase.

To use this calculator, select the wattage of the appliances you wish to use. Enter the quantity of each appliance. This will provide you with a sub-total, this number can be modified for your convienance. All of the sub-totals are then totaled at the bottom.

Appliance	Wattage	Quantity	Sub-Total
Refrigerator	300 400 500 600 700 800	Qty:	Watts
Freezer	300 350 400 450 500 550 600	Qty:	Watts
Electric Range w/ Oven	5,000 7,000 9,000 11,000 13,000 15,000 18,000	Qty:	Watts
Microwave Oven	800 900 1,000 1,100 1,200 1,400 1,600	Qty:	Watts
Dish Washer	1,000 1,500 2,000	Qty:	Watts
Coffee Maker	800 900 1,000 1,100 1,200 1,300 1,400 1,500	Qty:	Watts
Toaster	1,000 1,250 1,500 1,750 2,000	Qty:	Watts
Well Pump	500 600 750 1,000 1,250 1,500 2,000	Qty:	Watts
Electric Water Heater	1,500 2,000 2,500 3,000 3,500 4,000 4,500 5,000	Qty:	Watts
Furnace Fan	5,000 7,000 9,000 11,000 13,000 15,000 18,000	Qty:	Watts
Sump Pump	500 750 1,000 1,250	Qty:	Watts
Electric Heater	500 600 750 1,000 1,250 1,500 2,000 3,000 4,000	Qty:	Watts
Radio	50 75 100 150 200	Qty:	Watts
Television	100 150 200 250 300 400 500 600	Qty:	Watts
Window Air Conditioner	500 750 1,000 1,250 1,500	Qty:	Watts
Central Air Conditioner	1,500 2,000 2,500 3,000 3,500 4,000 4,500 5,000	Qty:	Watts
Electric Fan	200 250 300 350	Qty:	Watts
Attic Fan	300 350 400 450	Qty:	Watts
Washing Machine	500 750 1,000 1,250 1,500	Qty:	Watts
Electric Clothes Dryer	4,500 5,000 5,500 6,000	Qty:	Watts
Gas Clothes Dryer	400 450 500 550	Qty:	Watts
Hair Dryer	1,000 1,100 1,200 1,300	Qty:	Watts
Humidifier	100 150 200 250	Qty:	Watts
Dehumidifier	150 200 250 300	Qty:	Watts
Computer Equipment	500 600 700 800	Qty:	Watts
Copy Machine	1,000 1,250 1,500 1,750 2,000	Qty:	Watts
Fax Machine	150 200 250 300	Qty:	Watts
Security System	400 450 500 550	Qty:	Watts
Lighting	25 40 60 75 100	Qty:	Watts
Lighting	25 40 60 75 100	Qty:	Watts
Lighting	25 40 60 75 100	Qty:	Watts
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This calculator is designed to estimate the power consumption of a residence. The generator should be oversized to compensate for starting motor loads and other items which may have been forgotten. Always consult a sales person prior to purchase.

To use this calculator, select the wattage of the appliances you wish to use. Enter the quantity of each appliance. This will provide you with a sub-total, this number can be modified for your convienance. All of the sub-totals are then totaled at the bottom.