Miller Electric

Generators

Home » Products » Generators » Power Charts
How Much Generator Power Do You Need?

Step 1: Identify the items you wish to power at the same time. See Wattage Reference Guide (below) for common tools and appliances
Step 2: Determine total watts needed. Complete Generator Power Worksheet (pdf)
Step 3: Review additional information. FAQ (Frequently Asked Questions)


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

1,400

700
Electric Range
6-inch element

0

1,500
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


1,100


550
Furnace Fan,
gas or fuel oil

1/4 HP


1,000


600
Lights 0 As Indicated
Radio 0 50-200
Well Pump
1/3 HP

1,400

750
Sump Pump
1/3 HP

1,300

800
Central Air
Conditional

20,000 BTU


3,300


2,500


Machine Starting Watts Running Watts
Portable Conveyor
(1/2 HP)

3,400

1,000
Milker - Vacuum
Pump
(5 HP)

10,500

2,800
Farm Duty Motors (e.g.
Conveyors, Feed Augers, Air Compressors, Etc.)

1-1/2 HP



8,200



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

4,500

1,400
Barn Cleaner (5HP)
11,600

3,000
Silo Unloader (5HP)
12,200

4,300
 
Tool Starting
Watts
Running
Watts
Handrill
1/2 inch

600

600
Circular Saw
8-1/4 inch

1,400

1,400
Table Saw
10 inch

6,300

1,800
Band Saw
14 inch

2,500

1,800
Air Compressor
1-1/2 HP

8,200

2,200
Electric Chain Saw
2 HP, 14 in.

1,100

1,100
Plasma Cutter
27 amp, 230 volt, 3/8 in. cut

3,500

3,500
Millermatic® 212 MIG Welder
30 - 210 amps, 230 volt


6,500


6,500
Flood Lights
Vapor

1,250

1,000
Submersible Pump
(400 gph)

600

200
Centrifugal Pump
(900 gph)

900

500
High Pressure
Washer
1 HP

6,100

1,600
Wet Dry Vac
(1.7 HP)

900

900


Motor Starting
Watts
Running
Watts
Split Phase
1/2 HP

3,175

875
Capacitor Start -
Induction Run

1-1/2 HP


8,200


2,200
Capacitor Start -
Capacitor Run

1-1/2 HP


8,100


2,000
Fan
1/2 HP

3,500

1,100


Model Starting
Watts
Running
Watts
Millermatic 212 MIG Welder,
30-210 A, 230 V

6,500

6,500
Spectrum 625 Plasma Cutter,
30 A, 230 V, 1/2 in cut

6,900

6,900

Go to Generator Power Worksheet (pdf) | Download Page as Printable PDF | Back to Generators

Powerline Financing