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Just Generators

The UK's Number 1for Generators and Power Equipment
Call us for expert advice: 01263 820202

How much power do you need?

Before deciding on a generator, it is important to consider ALL the appliance you may want to operate, how many will be used simultaneously and the TOTAL current consumption at any one time. Most appliances have a descriptive plate stating the current, usually in watts.

Important

Various electrical applications have very different power requirements, so it is essential to understand each particular need. For example TV sets, cookers, kettles and filament lamps have resistive loads, this means that their start up and operating currents are virtually the same - and as stated on the manufactured descriptive plate. Buying the right generator can seem like a formidable task. But in just a few easy steps you can effectively and confidently decided and choose which generator is right for you.

  • Identify the tools and appliances you wish to operate with your generator.
  • Determine the required power for each item ( see appliance data plate i.e.: watts of appliance).
  • Add the required Watts of each item that will be running simultaneously. Also allow for motor starting of appliance * see chart
  • Choose the generator that has rated Watts that meet or exceed this total power.

Motor starting is an important consideration when buying a generator. Keep in mind that induction type motors, like those that run sump pumps, refrigerators, compressors, pressure washers typically require 2 to 3.5 times their listed running watts to start. below is a chart you can use to determine how many Watts you will need to start up motors of various sizes and types. Please note that power tools using a universal commutator do not require any additional start up power. The calculator below lists tools and appliances you may want to use with your generator. With each tool or appliance is listed the approximate running watts for each.

Note: Always consult the data plate on the tool or appliance for accurate electrical information. The outlet configuration of some units may require modification to achieve maximum rated power. If you are in any doubt then consult the manufacturer of your appliance, simply ask them this, I have your Model #????? I wish to run this via a generator what is the start up wattage or the kVA of the generator I need.

Industrial/Hire Equipment
Alligator saw 1020W Angle grinders:

125mm dia 1050W

180mm dia 2000W

230mm dia 2200W

12 in dia 2400W

Belt Sander 1020W
Cement mixer 1320W Centrifugal pump 2in 2000W Chain saw 1150W
Circular Saw up to 1800W Compressor

6cfm 2200W

14cfm 6000W

Concrete mixer 1300W
Concrete poker 1500W Cut off machine (12in dia) 2400W Dehumidifier 3000W
Disc sander 1200W Fan heater up to 3000W Floor sander 8in 2000W
Floor scrubber 1000W Hammer drill 1150W Hot air gun 1500W- 2000W

enter quantity

power

Impact wench from 440W to 850W

enter quantity

power

Jig saw 550W Kango demolition hammer
1050W- 1400W

enter quantity

power

Lathe 750W Masonry saw

10in 4000W

14in 8000W

Mitre Saw 900W - 1650W

enter quantity

power

Nibbler upto 500W Orbital sander upto 500W Planer 900W
Power float 1500W Pressure washer (2.4gpm) 3000W Rotary hammer
1010W
Router 1600W- 1850W

enter quantity

power

Tamper Z-beam 1500W polisher
950W
Stone cutter 1050W Vacuum pump 1500W    
Wallpaper stripper 1200W        
Garden & DIY          
Angle grinder 5in 600W Belt sander 750W Bench grinder 300W
Chain saw 1400W Circular saw 1200W Hedge trimmer 500W
Hot air gun 1600W Jigsaw 380W Lawn mower:

12 in cylinder 280W- 400W
enter quantity

power

12 in hover 900W- 1150W
enter quantity

power

Lawn raker 400W Orbital sander 250W Planer 900W
Rotavator 750W -1500W

enter quantity

power

Router 860W Strimmer 10in 350W
Submersible pump 1000W        
Domestic & Office          
Air Conditioning 2500W Central Heating Pump 800W Computer 400W
Coffee Perculator 500W -700W

enter quantity

power

Cooker at least 10000W Deep freeze 1000W
Dishwasher 2000W-2500W

enter quantity

power

Electric blanket 50W -150W Electric fire per bar 1000W
Electric grill 1000W -1500W

enter quantity

power

Fan 50W Fluorescent lamp 60W
Food processor 400W Food mixer 450W Hair dryer 1000W-1500W

enter quantity

power

Iron conventional 1000W Iron steam 1500W Kettle 2200W
Lights 100W Microfiche 220W Microwave 1500W
Photocopier 1600W Printer 350W Radiator(oil filled) 1000W-2000W

enter quantity

power

Radio 350W Refrigerator 1000W-2000W

enter quantity

power

Sewing machine 100W
Slow cooker 130W Spin dryer 400W Stereo 100W
Toaster 750W-1500W

enter quantity

power

TV Colour 250W Telefax 600W
Telephone PBX 700W Tumble dryer 2400W Vacuum cleaner 1200W
Vacuum cleaner (upright) 800W VDU 300W Video 100W
Washing machine 4000W Water heater 3000W Word processor 450W
Caravan Camping          
Electrolux fridge 110W Low wattage Caravaner electric kettle 50W TV bw portable 50W
TV colour portable 100W        

Your required power is Watt      or   KW        


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