HOW A BATTERY BACKED UP EMERGENCY POWER SYSTEM WORKS

To summarize: When utility power is available, the power from the utility is passed through the inverter's built in transfer switch to power your home's protected loads. The utility power is also used by the inverter's built in battery charger to keep your inverter's battery pack charged and ready for the next power failure. When a power failure occurs, the inverter automatically begins converting DC power from your charged batteries into AC power that is used by your emergency loads such as your refrigerator, lights, radio, TV etc.

The emergency power that is produced by this type of system is only available as long as the battery pack remains charged. The larger the battery pack, the longer your run time. Run times of up to several days are possible depending on the capacity of the battery pack and the power consumption of your loads.

Once the power from the utility company has been restored, this system will automatically pass the utilities, power through its built in transfer switch to your emergency loads for normal operation and will also begin recharging the battery pack in preparation for the next power failure. Under normal circumstances, in a typical installation, this type of system is entirely automatic. There are no manual switches that need to be activated in the event of a power failure or while recharging the battery pack. 

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