Power Generator

Traditional Portable Generator

Traditional portable generators produce power by using an engine to rotate two large coils of wire (the rotor) inside a circumference of magnets (the stator). Each full rotation of the engine produces one complete sine wave of AC power. Therefore, the engine must maintain a constant speed of 3000RPM to produce the standard of 50Hz. (3000 revs / 60 seconds (1min) = 50Hz). No matter what the load, a traditional style generator must run at full speed to provide the correct power.

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Inverter Generator

An Inverter Generator is normally used where power is required for sensitive electronic equipment like PCs, TVs and instrumentation. They are also chosen when portability or size is important and where noise must be kept to a minimum.

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Portable Generator

A portable generator consists of two main components, a gasoline or diesel-powered engine and an alternator. The alternator consists of a rotor (rotating) inside a stator (fixed). The engine power is used to rotate the rotor inside the stator which generates AC power. Portable generators have many applications at work and around the home and have made outdoor events and projects much easier to tackle.

The GT POWER Range of generators take this convenience and portability to another level with the latest technology and functions.

GTPower Unique Features

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Designed from the ground up, GT Power has studied the Kiwi lifestyle and New Zealand conditions, and have curated a range of portable, versatile generators that suit the way of life that we live and love. GT Power has matched their models to suit the tasks that you do most. With generators ranging from 2000W to 18000W, GT Power has your portable power needs covered.

Note the wattage required

The list below offers a guide on the wattages used on most common appliances and items used at home and in the workplace. For exact figures we recommend you check the nameplate or instruction manual for your individual appliances. Also listed (where applicable) is the “starting wattage” or “surge wattage” which is the amount of wattage needed to start an appliance with a motor. This may be up to three times the wattage required to run the appliance, so this must be taken into consideration.

All generators also have a maximum and rated wattage output. GT POWER Generators are designed to work at their maximum rating for up to half an hour. Rated power is the level where the generator can be operated continuously and is typically 90% of maximum power.

Calculate your total power needs

This chart lists average power requirements. Your particular tool or appliance may require more or less than the listed wattage. Firstly, add up all the “running wattage” requirements for all the items that you need to power simultaneously. Next, add to that total the highest of the “starting wattages” you listed down. Now you know approximately how much power you need to start and run your appliances and equipment.

Average Power Requirements

Home Appliances / ToolsApprox Run (W)Approx Start (W)
Microwave 750W7501200
Coffee Maker17501750
Electric Clothes Drier57505750
Washing Machine11502300
Colour Television350350
Electric Frypan15001500
Computer - Desktop700700
Electric Jug24002400
Dishwasher - Cool Dry7001400
- Hot Dry14502000
Toaster - 2 Slice12501250
- 4 Slice16001600
Hair Dryer800-1700800-1700
Steam Iron18001800
Garage Door Opener - 1/4 HP5501100
- 1/3 HP7251400
Sump Pump 1/2 HP10502150
Well Pump 1/2 HP10002100
Household Water Pump12002700
Workshop Appliances / ToolsApprox Run (W)Approx Start (W)
Central Air Conditioner:  
10,000 BTU15002200
24,000 BTU38005000
32,000 BTU50006500
Room Air Conditioner  
10,000 BTU15002200
Circular Saw 7 1/4"14002300
Chainsaw 2HP11002500
Portable Air Compressor12003600
Hand Drill 1/2"600900
Drill 1/2"600900
Battery Charger 15 amp500700
Electric Welder 200 amp AC90009000
Electric Weed Trimmer500650
Belt Sander10001300
Table Saw 10"17504250
Bench Grinder14002450
Concrete Mixer 3.5c/f19002500
Band Saw11001350
Power Drill - Medium10001200
- Heavy Duty15001800
Angle Grinder - 100mm10001200
- 230mm24002700

*This chart lists average power requirements, your particular tool or appliance may require more or less than the listed wattage. It is always recommended to use true specifications where possible.

* Where START wattage is the same as RUN wattage, this signifies no additional power is required for starting.

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Not Sure What Generator Is Right For You?

Use our handy generator selection guide to find the perfect GT Power generator for your needs.