In a 3 phase Inverter the distribution is spread across 3 different waves in order to power large loads and connected devices.
For example, most arrays are connected to 3 phases in order to distribute power evenly. A 3 phase Inverter is used in large scale power applications such as HVDC power transmission. See figure below.
![three phase wave form](https://static.solarmarket.com.au/wp-content/uploads/2014/02/three-phase-wave-form.png)