How do I choose my generator size?

Choosing a generator that can handle all your power needs is essential. Follow the simple steps:

  1. Determine the appliances you intend to use with your generator
  2. Work out the power usage of each product calculating the initial surge (starting watts)
  3. Add up all the wattages of the appliances you may operate at one time.
  4. Select the generator with a rated output that covers a minimum of your total wattage.

Below is a quick guide to help you find the right generator for you.


How do I calculate Rated Power?

Rated Power is the number of watts. In cases where the appliance only refers to required amperage (Amps), to calculate the number of watts refer to FAQ below ‘How do I convert Amps to Watts?’.


How do I convert Amps to Watts?

Simply use the formula Amps x Volts = Watts. For example, if the mains electrical system of an appliance was 240 volts, a 6 amp appliance requires 1440 watts to run (6x240).


What sort of fuel do I use?

Jack Hardy inverter generators are designed to run on unleaded petrol. A pump octane rating of 86 or higher is recommended as this will reduce deposit build up on valves, muffler, spark arrestor and spark plugs.


Where do you deliver?

We deliver Australia-wide.


How is my private information handled?

Your personal details are treated with the utmost care. For this reason, we do not store your credit card details. Information provided by you is only used within the context of providing service to you. Your information is not shared with, sold or rented to others under any circumstance.



JACK’s TIP: Always refer to your Operator’s Manual included with the purchase of your generator for complete information on required maintenance procedures, schedules, operation, warranties etc.


How do I operate my generator?

  • Before starting the generator, check the fuel level.
  • Just like a car, refuel when the engine is off and in a well-ventilated area. Do not over fill, and make sure that any spilled fuel has been cleaned off before starting your generator.
  • Check the oil level and air filter.
  • Move the generator outside. Generators should only be operated outdoors because engines produce carbon monoxide which is hazardous if inhaled.
  • Connect the power cord to the generator.
  • Turn the circuit breaker off before starting the generator. Then allow the generator the warm up before turning the circuit breaker on.

How long can my generator run before I need to check the oil?

Depending on the size and model of your generator Jack recommends checking the oil level before each start. Oil change and filter change frequency and other routine maintenance also vary per model, especially during periods of extended power outage.



How can I obtain a replacement operator's manual?

You can send an email to sales@claytonengineering.com.au or call 1300 798 022 to obtain an operation manual. Just be sure you note your model number so that we can send you the right copy.


What is covered under my warranty?

Jack Hardy’s inverter generators are protected by a three-year warranty from date of original purchase against defects in material and workmanship. For further details refer to ‘Warranty Policy’ in the menu tab.


What if my purchase is faulty?

If your goods are received in faulty condition put a claim in to Jack Hardy ASAP. Your purchase will either be replaced or repaired as part of Jack’s hassle-free customer care package.