Maximum Demand Calculator to AS/NZS 3000

This calculator computes the maximum demand of current based on the specific load group, its phase types and quantities for single unit households (a house, shed or individual living unit) based on the procedures provided in the AS/NZ 3000 Wiring Manual.
CalculationInputsParameter descriptions
You can only consider 10 different items. If you need to use less than 10 items, set the quantity values of unwanted rows to "0".
❗Note, if you choose "3 Phase", ensure to select the option "RWB".
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A1​
-​
H1​
A​
B2​
-​
F2​
A​
B3​
-​
A1​
-​
C1​
A​
B1​
-​
A2​
A​
D1​
A​
OutputsThe output shown is the maximum demand required of each phase based on the inputs above. If you want to see the demand due to each load group, click the toggle below.
See individual demands
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5187​
5230​
5185​
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ExplanationWhat is maximum demand?Maximum demand refers to a quantity of electricity that a system, circuit, or facility uses in a given amount of time. It represents the peak load or demand that the electrical system must have the capacity to manage. This concept is essential for electrical utilities since they must have enough capacity to handle their customer's peak demand without overloading or rupturing the system. 
How are the output values calculated for each load group?This section provides an explanation about the methods used to calculate the output values for each specific load group. This is a summary of AS/NZ 3000-2018 - Table C1, Column 2.
Click on the specific load group to see how it has been calculated!
Lighting, General
Lighting Outdoor > 1000 W
Socket-outlet, General use ≤ 10A
Socket-outlet, General use ≤ 15 A
Socket-outlet, General use ≤ 20 A
Cooking, Range > 10 A 
Cooking, Other > 10 A
Laundry, Appliance > 10 A
HVAC, Airconditioning > 10 A
HVAC, Heating > 10 A
Water Heater, Instantaneous
Water Heater, Storage
Water Heater, Pool
Water Heater, Spa
Charging, Electric Vehicle
Motor, Lift
Motor, General
Other, Appliances > 5A
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Related Resources3-Phase Power Calculator
Short Circuit Current Calculation For Cable AS/NZS 3008
Wire Voltage Drop Calculator to AS/NZS 3008
AC Current Calculator (3Ph, 1Ph)
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	5187	5230	5185