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1 x Axpert – 3kVA – 2.4kW – 12v Pure Sinewave Inverter with built in charger
4 x 105Ah 12v Maximus Battery
The inverter needs to be wired into a distribution board or a pre-designated red circuit. A red circuit is a breaker on your distribution board that will have all your persistent (immune to power outage) loads connected to it. Naturally you can also wire in an extension lead type plug point but ideally, this inverter should be a more permanent fixture.
The system has a largish inverter(2.4kW) and a decent battery capacity. The total expected operation of this system is 1008 watts per hour during load shed, any more would not allow you to sustain a 2.5-hour load shed. You can of course easily add on an additional battery or 2 and get the maximum benefit. That said, you can power quite a bit with 1008 watts.
An additional benefit of the system is the inverter which has its own built-in charger, thus the system is completely self-sustaining and does not require management or user intervention. It automatically kicks in when load shedding starts and automatically charges the battery when load shedding ends. You would not notice a load shed for anything connected to that system.
It’s a Chinese imported inverter charger, its a hardy piece of equipment, this unit looks good and is extremely popular locally. Should there be any problem on the inverter it is locally supported. The battery is a standard issue calcium deep cycle battery, need ventilation but has a decent life expectancy if not cycled too deep.