Generators are invaluable for many construction projects, especially those in remote or unpowered areas where they may be used to supplement or replace grid electricity and keep your equipment running.

However, gennies are far from a one-size-fits-all solution. To decide which type of generator hire is the best fit for your needs, your equipment supplier needs as much information as possible about your power requirements and other aspects of your site. This includes:

What are you intending to run off the generator?

Do you need to power or charge tools, handheld equipment such as welders, heavy machinery or even to
power a home or other building? How much of this equipment will be running at the same time?

How do you intend to connect it?

Do you want your generator to be hard-wired or do you need a distribution board to connect via outlets?
Outlets are only available for generators up to 125kVA, but nearly all machines can be hard-wired.

What type of voltage do you need?

Do you require single phase power (240V/50Hz), three phase power (240V or 415V/50Hz) or a special
voltage or frequency to power imported equipment? Single phase power is the standard for homes, while
many industrial settings use three phase power.

How much current are you drawing?

Do you know what current (in amps) is being drawn from your equipment? For most power applications,
this can be calculated as follows:
Single phase power: 4.5 amps per kVA
Three phase power: 1 amp per kVA

What size generator do you need?

Generators come in a wide range of sizes to meet all power needs, from briefcase-sized portable
for individual power tools up to container-style generators that can be connected to form
power stations.

To calculate the size of generator you need (in kVA), your supplier needs to know your total power
requirement (in kW).

What Size Generator Do You Need?

If so, you should provide information about its size (in kW or hp, found on the motor name plate) and the
type of motor fitted (DOL, Star Delta, soft starter and others).

What fuel option do you prefer?

Most small and portable generators below 8kVA run on petrol. Larger generators usually run on diesel.
You should also indicate whether you need on-site refuelling or a large fuel tank to make refuelling less

How long do you intend to use it?

Generators cannot be run indefinitely. If you need to run a generator around the clock, you should
consider hiring more than one to balance the load and make sure you have a backup.

What other equipment do you need?

To get a generator up and running, you'll likely need to hire equipment and accessories.

Common generator accessories include cable sets and covers, extension leads, changeover switches,
spare fuel tanks, barriers and trailers.

Do you have any special requirements?

If you're working in a residential area and need to keep the noise down, you could benefit from silenced
with sound-reduced canopies.
You should also inform your supplier if the generator will be used in a confined space or if there are
access issues on your site.

What type of delivery method do you prefer?

Your generator can be transported on a trailer, tilt tray, side loader or crane truck, depending on its size
and access on your site.

If you need a petrol or diesel generator for rent anywhere in Australia, contact your nearest Coates Hire branch

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