What should i do When im choosing an Inverter and Battery for Load shedding?

Posted by Vincent Dai on

Tackling Load Shedding

Learn how to calculate your daily power consumption before purchasing our inverters and batteries.

Energy consumption calculation

The energy E in kilowatt-hours (kWh) per day is equal to the power P in watts (W) multiplied by the number of usage hours per day divided by 1000 daily kilowatt-hour:

E(kWh/day) = P(W) × t(h/day) / 1000(kW/h)

E(kWh/day)= P(w) * T(h/day)  1000(kW/h)

     =180 * 4 (example) /1000

     =0.72 kWh/day

Appliance            Power (W)    T (h/day)      (KW/h)          E(kWh/day)      

Desktop Computer    100W            4           /1000                   0.4 

Laptop                 50W              4            /1000                   0.2 

DVD Player         120W            2           /1000                   0.24      

DSTV Decoder 40W              24        /1000                   0.96

 

Choosing the correct Inverter and Battery

The size you choose is highly dependent on the watts you would want to run. You will have to calculate the total power consumption of the appliances or tools you would want to run. See example below. Then choose an inverter with at least 20% more than the total energy consumption.  Using the example below you would need a minimum 600W Inverter and 100ah Exide battery. If you would wish to plug in more appliances in future then consider getting an 800W inverter.

APPLIANCE                           WATTS

52 inch LED TV               300W

DVD Player                      120W

DSTV Decoder (HD PVR P2)       40W

Total Watts                      460 W


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