Do You Need A 3 Phase Inverter?

Have you moved into a property with three-phase power and been told that you need a 3 phase inverter? You might be wondering what it is and whether you really need one. The answer to that question depends on your specific circumstances and needs. Whilst a 3 phase inverter will come with a number of benefits, they do come at a higher cost than most single-phase options so it’s important to consider whether or not it’s worth it.


What are the benefits of a 3 phase inverter?

The main advantage of a 3 phase inverter is that they can convert your home’s solar power to AC power and feed it evenly to your home across all three phases. Take for example that a single-phase solar system would be able to feed solar power into just one phase whilst a 3 phase inverter could divide the power into three phases. A larger single-phase system might put too much load and cause an unbalance whilst a 3 phase inverter will spread this out.


When might you need a one?

There are circumstances where a single-phase system just won’t be suitable. You’ll likely find that you have problems with it in certain light conditions which can be extremely frustrating. A 3 phase inverter can save you from the frustration of having your system stop working when it should be producing.


How they feed power to your home

worker installing solar panels and a 3 phase inverter

They are designed to take the solar power from the roof of your home and convert it into useable AC power which is fed into the switchboard of your home. The power that your solar panel collects is used to run electricity in your property, any surplus is sent back to the energy grid. An inverter is basically designed to push the stored power into the power cable of your home, the more electricity it needs to deliver the more force it needs to push power to your home. If you need to feed a lot of power into your home then there will be a lot more resistance and this will raise the AC voltage which can force your system to shut off. If you have a single-phase system then you’ll likely find this happens at a frustrating time, when conditions are perfect on a sunny day because the system will get overloaded and the AC voltage is too high. In this situation, you’ll likely need a 3 phase inverter to reduce the amount of resistance as less power will need to be pushed into your cables.

If you and your family moved to a rural area and there is a great distance between you and the road then you’ll likely suit a three phase system it’s a good idea to get a professional to perform a site inspection to confirm.


You won’t need a three-phase system in every situation, in many cases a single-phase system will be fine but if you live a long way from the street, have small cables or there are other issues that may cause AC voltage to rise then it might be a good idea to consider three-phase systems as this can help you to limit potential faults. If you’re not sure what’s right for you then it’s a good idea to seek professional advice and guidance. It’s a great idea to get a site inspection to find out what would best suit your property. Get in touch with local solar installers in your area to find out what will work for your home.