To select a generator that has enough power output in watts, add the wattage for the items you want to simultaneously run. Tools and appliances with induction motors may require 3-7 times the listed wattage when starting. All data listed is approximate - check your tool/appliance for specific wattage requirements.

Appliance Starting
Watts
Running
Watts
Dishwasher
Cool Dry
Hot Dry

1,400
1,400

700
1,450
Electric Range
6-inch element
8-inch element

0
0

1,500
2,100
Microwave Oven, 625 Watts 800 625
Refrigerator or Freezer 2,200 700
Automatic Washer 2,300 1,150
Clothes Dryer
Gas
Electric

1,800
700

1,800
5,750
Garage Door Opener
1/4 HP
1/2 HP

1,100
1,400

550
725
Furnace Fan, gas or fuel oil
1/8 HP
1/6 HP
1/4 HP
1/3 HP
1/2 HP

500
750
1,000
1,400
2,350

300
500
600
700
875
Lights 0 As Indicated
Radio 0 50-200
Well Pump
1/3 HP
1/2 HP

1,400
2,100

750
1,000
Sump Pump
1/3 HP
1/2 HP

1,300
2,150

800
1,050
Central Air Conditioner
10,000 BTU
20,000 BTU
24,000 BTU
32,000 BTU
40,000 BTU

2,200
3,300
4,950
6,500
7,800

1,500
2,500
3,800
5,000
6,000


Machine Starting Watts Running Watts
Portable Conveyor, 1/2 HP 3,400 1,000
Farm Duty Motors (e.g. Conveyors, Feed Augers, Air Compressors, Etc.)
1/3 HP
1-1/2 HP


1,720
8,200


720
2,200
Washer (2 gal/min)
550 PSI
700 PSI

4,500
6,100

1,400
1,600
Tool Starting
Watts
Running
Watts
Handrill
1/4 inch
1/2 inch

350
600

350
600
Circular Saw
6-1/2 inch
8-1/4 inch

500
1,400

500
1,400
Table Saw, 10 inch 6,300 1,800
Band Saw, 14 inch 2,500 1,100
Air Compressor
1/2 HP
1-1/2 HP

3,000
8,200

1,000
2,200
Electric Chain Saw
1/2 HP, 12 in.
2 HP, 14 in.

1,100
1,100

1,100
1,100
Flood Lights
HID
Metal Halide
Mercury
Vapor

125
313
1,000
1,250

100
250

1,000
Submersible Pump
(400 gph)

600

200
Centrifugal Pump
(900 gph)

900

500
High Pressure Washer
1/2 HP
1 HP

3,150
6,100

950
1,600
Wet Dry Vac (1.7 HP) 900 900


Motor Starting
Watts
Running
Watts
Split Phase
1/8 HP
1/2 HP

800
3,175

300
875
Capacitor Start -
Induction Run
1/3 HP
1-1/2 HP


2,020
8,200


720
2,200
Capacitor Start -
Capacitor Run

1-1/2 HP


8,100


2,000
Fan
1/8 HP
1/2 HP

1,000
3,500

400
1,100