Find the data plate
Look on the unit or in its manual. Do not remove electrical covers.
A simple starting point
Generator size calculator
Add what you want to power, enter its electrical input, and see a high-level generator size estimate. Your load list starts empty.
1. Choose supply2. Add loads3. See estimate
1
Your supply
Not sure? Leave single phase selected and ask Gold Coast Generators to confirm.
2
Add equipment
Choose an item or add your own. Typical values can be changed.
Estimate lighting or general power by floor area
Optional for buildings. Use planning rates supplied for your site; add air conditioning, pumps and lifts separately. Do not count the same lighting or outlets twice.
Example only: 100 m² × 10 W/m² = 1 kW. A suitable rate depends on the building; this is not an AS/NZS 3000 maximum-demand assessment.Your loads
Include only equipment you want to run. All included loads are counted together.
Your load list is empty
Add equipment above to get started.
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Generator options
Up to three options with suitable running ratings. Gold Coast Generators will confirm compatibility before you buy.
Add loads to see generator options
We will not suggest a generator from an incomplete load list.
A quick guide
How to find your appliance power
Find kW or amps
Use electrical input or rated current. For air conditioners, cooling and heating capacity are not electrical input.
Enter the value
Choose kW or amps in the load details. If it is unclear, send Gold Coast Generators a photo of the plate.
My data plate shows watts (W)
Divide watts by 1,000 to get kW.
Important: preliminary estimate only
This is a high-level guide, not an electrical design or AS/NZS 3000 maximum-demand calculation. Typical assumptions cannot verify motor starting, phase balance or site conditions. Gold Coast Generators and a licensed electrical contractor or electrical engineer must confirm final sizing, especially for pumps, lifts, fire or medical equipment. Fixed-wiring connections require a licensed electrician and an approved changeover arrangement. Never run an engine-driven generator indoors.