Here is a handy size chart and step by step guide to sizing up your inverter. Here is a handy size chart and step by step guide to sizing up your inverter. We created a comprehensive inverter size chart to help you select the correct inverter to power your appliances. The need for an inverter size chart first became apparent when researching our DIY solar generator build. Solar generators range in size from small generators for short camping trips to. . Here's everything you need to know to nail your inverter sizing the first time. Your solar inverter serves as the translator between your panels and your home's electrical system. The inverter. . As you likely know, solar cells produce direct current (DC) electricity, which is then converted to alternating current (AC) electricity by a solar power inverter.