The most likely reason is the voltage level is above the acceptable level. No matter what the inverter sizeis , these systems have a certain voltage limit. When the limit is reached the safety trigger mechanism kicks in. There are many reasons why the voltage level would spike. Most likely it is already above 240 volts or. Just like solar panels and batteries, the inverter cable has to be the right sizeto work. Inverter cables should be as short and thick as possible to. By system failure this can refer to any part of the solar system, the inverter, solar panel, charge controller or battery bank. Usually if there is a. Solar inverters tied to the gridautomatically shut down during a power failure for safety reasons. If there is a power outage in your area or flickers on and off,. An inverter connected to a solar system depends on the solar panels for power. If there is not enough sunlight, the panels will not be able to produce the electricity required by the inverter to.