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Diversity Calculator

An electrical diversity calculator for calculating the total connected load and applying diversity to ascertain the maximum demand.

Electrical Apps for iPhone
Android Electrical Apps
PC Version
maximum demand calculator
  • Calculate total connected load
  • Apply diversity factors
  • Calculate maximum demand
Maximum Demand Calculator

Based on Appendix A of the On-Site Guide

Optimised for iPad, iPhone, Android Phones and Android Tablets

App Store
Play Store
Three phase maximum demand calculator

Total Connected Load

To calculate the maximum demand, first we need to add all of the required loads to get the total connected load.

🛈 When adding multiple loads of the same type (i.e. multiple “socket-outlets” or multiple “cooking appliance” etc.), you MUST add the largest load first, then the 2nd largest load and then the remainder of the loads (of the same type), unless you have selected the Type of Premises as “Other (custom)” or a Type of Load as “Custom Circuit”.

Calculate the Total Connected Load

1) Select the Distribution Board Type:

  • Single Phase
  • Three Phase

2) Select the Type of Premises:

  • Select a preset option, or
  • select option “Other (custom)”

3) Select a Circuit Type:

  • Select an preset circuit type, or
  • select “Custom Circuit”

4) Enter the load for the circuit:

  • Accepts, kW, Watts or Amps

6) Tap/click “Add Load”

7) The load will be added to the table

When adding loads to three phase distribution boards you will need to allocate it to a specific phase, i.e. L1, L2, L3 or L123 by selecting from the “Phase” dropdown options.

Custom Premises and Circuits

Type of Premises – Other (custom)

When selecting a “Type of Premises” option, these preset options will use the diversity factors from Appendix A of the On-Site Guide.

However, if you select “Type of Premises” option “Other (custom)”, you can enter your own diversity factor (DF) for every Circuit Type that you add.

Circuit Type – Custom Circuit

If you want to apply your own diversity factor to a specific circuit, then for the “Circuit Type”, select option “Custom Circuit”, where you can enter your own diversity factor (DF) and circuit description.

You can also use the “Custom Circuit” option with the type of premises option “Other (custom).

The demo video may not reflect the current version of the app.

Demo video
maximum demand diversity factors
electrical maximum demand calculator
how to calculate maximum damand
maximum demand pdf

Maximum Demand

When you add a load, the information is added to the maximum demand table. The table will display the total connected load (per phase if its a three phase distribution board).

The table will also display up to three maximum demand results so you can compare the maximum demand of different diversity methods.

  • Result DL1 = Based the On-Site Guide Appendix A
  • Result DL2 = Based on a Rule of Thumb (ROT) method.

Usage Factor (UF)

In addition to applying diversity to the total connected load, you can also apply an additional “Usage Factor” to the DL1 result.

This “Usage Factor” will apply an additional diversity factor to the calculated diversified load (maximum demand) DL 1 result.

For example: If DL 1 (Diversified Load 1) = 100A and you apply a “Usage Factor” of 50%, then 100A (DL1) x 0.5 (50% usage factor) = DL 3: 50 Amps.

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Summary of Features

  • Calculate total connected load
  • Diversity factors based on the On-Site Guide
  • Apply your own diversity factors
  • Single phase loads
  • Three phase loads
  • Apply an additional usage factor (UF)
  • Accepts kW, Watts, or Amps
  • Calculate maximum demand
  • Create a results PDF file

Calculate the maximum demand by applying diversity.

Get the App

Download the Diversity Calculator app to start calculating your maximum demand today.

Electrical Apps for iPhone
Android Electrical Apps
PC Version

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