Wattage Chart

Category	Appliance	Running Wattage Required	Surge Wattage Required at Startup
Household/RV	Coffee Maker	1750	0
	Dishwasher: Cool/Dry	700	1400
	Electric Fry Pan	1300	0
	Electric Range: 8in. Element	2100	0
	625W Microwave	625	800
	Refrigerator or Freezer	700	2200
	Automatic Washer	1150	2300
	Electric Clothes Dryer	1800	5750
	Furnace Fan (Gas or fuel oil): 1/8 HP	300	500
	Furnace Fan (Gas or fuel oil): 1/6 HP	500	750
	Furnace Fan (Gas or fuel oil): 1/4 HP	600	1000
	Furnace Fan (Gas or fuel oil): 1/3 HP	700	1400
	Furnace Fan (Gas or fuel oil): 1/2 HP	875	2350
	Lights	As indicated on bulb	0
	Radio	50-200	0
	Sump Pump: 1/3 HP	800	1300
	Sump Pump: 1/2 HP	1050	2150
	Color Television	300	0
	RV Air Conditioner: 13,500 BTU	1500	2200
	Room Air Conditioner: 10,000 BTU	1500	2200
	Central Air Conditioner (for 2200 sq. ft. home*)	10,000	11,250
	Small Appliance	200	1700
Contractor	8in. Bench Grinder	1400	2500
	Pressure Washer: 1 HP	1200	3600
	7-1/4in. Circular Saw	1400	2300
	Electric Chain Saw: 14in. Bar, 2 HP	1100	0
	10in. Table Saw	1800	4500
	Drill: 3/8in., 4 Amps	440	600
	Drill: 1/2in., 5.4 Amps	600	900
Industrial Motors	Split Phase: 1/4 HP	600	1000
	Split Phase: 1/2 HP	875	2300
	Capacitor Start Induction Run: 1/3 HP	720	1300
	Capacitor Start Induction Run: 1 HP	1600	4500
	Capacitor Start Capacitor Run: 1 1/2 HP	2000	6100
	Fan Duty: 1/6 HP	550	850
Farm Equipment	Electric Fence: 25 Miles	2500	0
	Milk Cooler	1100	1800
	Milker (Vacuum Pump): 2 HP	1000	2300
	Portable Heater (Kerosene, Diesel Fuel): 50,000 BTU	400	600
	Portable Heater (Kerosene, Diesel Fuel): 90,000 BTU	500	725
	Portable Heater (Kerosene, Diesel Fuel): 150,000 BTU	625	1000
	Battery Charger: 15 Amp	380	0
	Battery Charger: 60 Amp with 250 Amp Boost	1500/5750	0
	Battery Charger: 100 Amp with 300 Amp Boost	2400/7800	0
	Electric Welder: 200 Amp AC	9000	0
	Electric Welder: 230 Amp AC at 100 Amp	7800	0
Computers	Desktop	600-800	0
	Laptop	200-250	0
	Monitor	200-250	0
	Fax	600-800	0
	Printer	400-600	0

*Based on average-sized unit. Central air conditioners differ in wattage requirements; consult owners manual for specific wattage requirements.

Finally, add together the wattage requirements for all the electrical devices that you want to run, to determine the minimum continuous wattage, or start at the same time, to determine the minimum surge wattage, you will need from a generator.

Minimum Recommendations for Typical Home Standby Power (1 kw = 1,000 watts)

Typical Home Standby Power Needs

Customer Type	Appliance	One Item at a time	Two Items at a time	All Items at once
Customer #1	Lights	2.4kw	4.5kw	6.6kw
	Color Television	2.4kw
	Furnace Fan	2.4kw
	Freezer	2.4kw
	Refrigerator	2.4kw
	Sump Pump	4.5kw
Customer #2	Includes Customer #1 and central air	4.5kw	6.6kw	10.5kw
Customer #3	Includes Customer #1 and a well pump	4.5kw	6.6kw	10.5kw
Customer #4	All of the above	4.5kw	6.6kw	13.5kw

When in doubt, remember that bigger is better!

3-30kW | 31-60kW | 61-100kW | 101-200kW | 201-500kW | 501-1000kW | 1000 and Larger | Automatic Transfer Switches |