Typical Power Ratings of Common Electrical Equipment

You can use this guide to help select the appropriate generator for your needs.

This is an approximate guide only. Please consult the equipment manufacturer for precise wattage. If in doubt, select the next largest generator. 

1000Watts = 1.0KW 1.25kVA = 1.0 kW

Electrical Equipment

Approximate Rated Wattage

Approximate Starting Wattage

Suggested  Petrol Generator

Domestic Use

Commercial Use

Essentials:

Light blub 60 0 SPG2200/ SPI1000 GE2500/ GE2501
Light blub 75 0 SPG2200/ SPI1000 GE2500/ GE2501
Refrigerator/Freezer 550 1350 SPG2200/ SPI2200 GE2500/ GE2501
Sump Pump (1/3HP) 1140 2850 SPG3200 5000HMS / 5000HMSLR
Sump Pump (1/2HP) 1200 3000 SPG3200 5000HMS / 5000HMSLR
Water Well Pump (1/3HP) 575 1440 SPG2200 GE2500/ GE2501
Electric Water Heater 3800 0 5000HMS / 5000HMSLR

Heating/ Cooling:

Space Heater 1500 0 SPG2200 GE2500/ GE2501
Humidifier 175 0 SPG2200/ SPI1000 GE2500/ GE2501
Furance Fan Blower (1/3HP) 700 1400 SPG2200/ SPI1000 GE2500/ GE2501
Furance Fan Blower (1/2HP) 800 2350 SPG3200 5000HMS / 5000HMSLR
Window AC (10,000 BTU) 1000 2100 SPG3200 5000HMS / 5000HMSLR
Window AC (12,000 BTU) 3250 3950 6500HMS/ 6500HMSLR
Central AC (10,000 BTU) 1500 3000 SPG3200 5000HMS / 5000HMSLR
Central AC (24,000 BTU) 3800 4950 5000HMS / 5000HMSLR
Central AC (40,000 BTU) 6000 6700 SE10000
Heat Pump 4700 4500

Kitchen/Laundry:

Iron 1200 0 SPG2200/ SPI2200 GE2500/ GE2501
Washing Machine 950 2400 SPG3200 5000HMS / 5000HMSLR
Microwave Oven 625 0 SPG2200/ SPI1000 GE2500/ GE2501
Microwave Oven 1000 0 SPG2200/ SPI2200 GE2500/ GE2501
Coffee Maker 1300 0 SPG2200/ SPI2200 GE2500/ GE2501
Electric Stove (8" Element) 2100 0 SPG3200 5000HMS / 5000HMSLR
Dishwasher 1200 3000 SPG3200 5000HMS / 5000HMSLR
Food Processor 500 0 SPG2200/ SPI1000 GE2500/ GE2501
Toaster Oven 1500 0 SPG2200/ SPI1000 GE2500/ GE2501
Toaster 850 0 SPG2200/ SPI2200 GE2500/ GE2501
Electric Can Opener 70 0 SPG2200/ SPI2200 GE2500/ GE2501

Living Room:

DVD Player 20 0 SPG2200/ SPI1000 GE2500/ GE2501
Stereo 450 0 SPG2200/ SPI1000 GE2500/ GE2501
LCD TV (32") 75 0 SPG2200/ SPI1000 GE2500/ GE2501
X-Box, Playstation, Wii 40 0 SPG2200/ SPI1000 GE2500/ GE2501

Office:

Desktop Computer & 18" Monitor 300 0 SPG2200/ SPI1000 GE2500/ GE2501
Fax Machine 150 0 SPG2200/ SPI1000 GE2500/ GE2501
Laser Printer 400 0 SPG2200/ SPI1000 GE2500/ GE2501
Inkjet Printer 10 0 SPG2200/ SPI1000 GE2500/ GE2501
Copy Machine 1300 0 SPG2200/ SPI2200 GE2500/ GE2501

Other Home:

Security System 500 0 SPG2200/ SPI1000 GE2500/ GE2501
Garage Door Opener (1/3HP) 550 1375 SPG2200/ SPI2200 GE2500/ GE2501
Curling Iron 1500 0 SPG2200/ SPI2200 GE2500/ GE2501
Hair Dryer 1250 0 SPG2200/ SPI2200 GE2500/ GE2501

Camping / Outdoors:

Electric Griddle 1500 0 SPG2200/ SPI2200 GE2500/ GE2501
AM/FM Radio 10 0 SPG2200/ SPI1000 GE2500/ GE2501
CD/DVD Player 100 0 SPG2200/ SPI1000 GE2500/ GE2501
Box Fan (20") 100 0 SPG2200/ SPI1000 GE2500/ GE2501
Colour TV (13") 50 0 SPG2200/ SPI1000 GE2500/ GE2501
Outdoor Light String 250 0 SPG2200/ SPI1000 GE2500/ GE2501
Phone Battery Charger 25 0 SPG2200/ SPI1000 GE2500/ GE2501
Inflator Pump 175 0 SPG2200/ SPI1000 GE2500/ GE2501
Crock Pot 240 0 SPG2200/ SPI1000 GE2500/ GE2501

DIY / Worksite:

Halogen Work Light 300 0 SPG2200/ SPI1000 GE2500/ GE2501
Halogen Work Light 500 0 SPG2200/ SPI1000 GE2500/ GE2501
Halogen Work Light 1000 0 SPG2200/ SPI2200 GE2500/ GE2501
Airless Sprayer (1/3HP) 600 1200 SPG2200/ SPI2200 GE2500/ GE2501
Reciprocating Saw 1080 2700 SPG3200 5000HMS / 5000HMSLR
Electric Drill (3/8", 4 Amps) 480 1200 SPG2200/ SPI2200 GE2500/ GE2501
Electric Drill (1/2", 5.4 Amps) 1100 1250 SPG2200/ SPI2200 GE2500/ GE2501
Hammer Drill 1600 1400 SPG2200/ SPI2200 GE2500/ GE2501
Circular Saw (7-1/4") 2100 5250 SE10000
Miter Saw (10") 1800 4500 6500HMS/ 6500HMSLR
Planer/Jointer (6") 1800 4500 6500HMS/ 6500HMSLR
Table Saw/Radial Arm Saw (10") 1800 4500 6500HMS/ 6500HMSLR
Belt Sander 950 2400 SPG3200 5000HMS / 5000HMSLR
Air Compressor (1/3HP) 300 780 SPG3200 5000HMS / 5000HMSLR
Air Compressor (1HP) 1400 3600 6500HMS/ 6500HMSLR

Note: the suggested generators are based on running a single appliance only.

Multiple Appliances

If you wish to run multiple pieces are electrical equipment you'll need to add all the rated watts of your appliances together. If one or more of your items has a starting wattage, take the largest starting wattage and substitute it for the rated wattage. More information about calculating wattages can be found in the following help article:

Buying the wrong generator is can lead to damaged equipment or the absence of power in an emergency. If you have any questions or require help working out which generator you need you can contact SGS here or call our technical team on 01332 576 850.