If you’re looking to rent a diesel generator, you might have a couple of questions, such as what size generator do I need? Here at Woodland Generators, we’ve got all the answers especially when it comes to generator sizing. As one of the country’s leading suppliers of industrial generators to rent and buy, we have all the equipment and knowledge needed to supply you with a temporary power supply that is perfect for your requirements. With decades of experience under our belts, we pride ourselves on the vast range of flexible generator services that we can offer to you. Whether you’re looking for event generator hire, or a construction site generator, you can be sure that we’ll find you the best power solution at the most competitive prices. 

Generator Sizing

One of the most important things to bear in mind when buying or hiring a generator is the generator sizing. If the generator is too small you won’t have enough power to supply the equipment you need it for. If the generator is too big, you’ll be wasting money, generating too much power and paying out more for the generator than you need to.

Generator sizing, 24-Hour Generator Hire

The first thing to do when working out how big of a generator you need, is to calculate the load size. Make a list of everything that the generator will be used to power and calculate the total wattage. This information can be found in the handbooks for your equipment or direct from the manufacturers. It is important to use starting wattages in your calculations if they are higher than the running wattage.

kW to kVA conversion

Once you’ve done that, you should convert your total wattage from kilowatts into kilo volt amperes. In order to work out the total kilo volt amperes, the following formula should be used:

kilowatts / power factor (0.8) = kilo volt amperes

In short, the kilo volt amperes value will be 80% of the kilowatt figure you calculated earlier. You should then consider the requirements you have for running the generator. Will it be used for temporary or standby power or will it be your main power source? If it’s your main power source, you’ll need to ensure you’re not running at more than 70-80% capacity, and should allow accordingly. Generators should never run at full capacity for more than 30 minutes, so this gives you a 20-30% margin of safety.

Now you know the amount of electrical input you need from your generator, you should look at the location and site access requirements. If the site is going to be difficult to access, you might need to position your generator offsite or use multiple smaller generators to split the power load. At this stage, you should speak to your generator supplier to see what the best option would be. As an additional safety check, you should speak to a certified electrician before installing a generator. They will be able to ensure that your site is suitable and that the generator will be right for your requirements. At Woodlands Generators, when using our generator rental service, you can rest easy knowing you’re renting your power supply from a highly established supplier. We only use generators made from the world’s leading generator manufacturers such as Volvo and Cummins – so you’re guaranteed to be using a safe and reliable power supply each and every time. 

Contact us today

If you would like to find out more information about generator sizing, then head to our website today. Alternatively, you can call 0845 600 3335 to speak to a member of our helpful and friendly team. 

If you have found this blog helpful, you may wish to read our previous blog on Where to go to buy a generator.

Cookie Control

Cookie control

We have placed cookies on your device to help make this website better.

I'm fine with this

We have placed cookies on your device to help make this website better.

You can use this tool to change your cookie settings. Otherwise, we’ll assume you’re OK to continue.

Some of the cookies we use are essential for the site to work.

We also use some non-essential cookies to collect information for making reports and to help us improve the site. The cookies collect information in an anonymous form.

To control third party cookies, you can also adjust your browser settings.

I'm fine with this
(One cookie will be set to store your preference)
(Ticking this sets a cookie to hide this popup if you then hit close. This will not store any personal information)
Information and Settings Cookie policy