Draw the layout of your home (living room, kitchen, bedroom/s, toilet, store room,
bomb shelter, etc.) and indicate all the equipment/appliances in the layout plan.
Prepare a legend of all the loads indicated in the layout plan. An example is shown in
Annex A for your reference.
3.2 List down all the electrical equipment/appliances that are in your home together with
the specification, power rating and the quantity using the template provided. An
example is shown in Annex B for your reference.
3.3 Take photos of different parts of the interior of your home showing all the electrical
loads that are listed in the table. Label the electrical loads on the photos accordingly.
Attach all the photos at the back of the report.
3.4 Calculate the power of each load and determine the Total Connected Load of all the
equipment/appliances in your home using the template provided. Show all your
calculation clearly. An example is shown in Annex B for your reference.
3.5 Calculate the load current demand of each load and the total current using the template
provided. Show all your calculation clearly. An example is shown in Annex B for your
reference. You may use 230V as the single-phase voltage for the calculation.
The general formula for determining the load current of a single-phase load is shown
below:
Correction factor
Voltage Power factor Efficiency
Power Current
For motor-driven loads, you may use a power factor of 0.85 and efficiency of 0.9 for
your calculation.
For fluorescent lighting, you have to use a correction factor of 1.25 for your calculation.
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4.1 Indicate the type of final circuit and the diversity factor to be applied for each load
using the template provided. An example is shown in Annex C. The Diversity Table
is attached in Annex D for your reference.
4.2 Apply diversity factor and determine the demand for each load. An example is shown
in Annex C for your reference.
4.3 Determine the maximum demand in Amperes and kW for the whole house.
