AS/NZS 3000:2018

Maximum Demand Calculator

Calculate the maximum demand of an electrical installation per AS/NZS 3000 Table C1 and C2. Add loads, assign phases, and get instant demand totals per phase.

Application Type

House / Individual Living Unit

Table C1, Column 2

Blocks of Living Units

Table C1, Columns 3–5

Hotels / Hospitals / Motels

Table C2, Column 2

Factories / Shops / Offices

Table C2, Column 3

Number of Living Units Diversity: 1st unit 100%, next 4 reduced, remainder further reduced

Load Group	Description	Phase	Rating	Unit	Quantity			Demand (A)
Load Group	Description	Phase	Rating	Unit	Red	Wht	Blue	Red	Wht	Blue
Maximum Demand Total (A)								0	0	0

Maximum Demand

Application—

Red phase—

White phase—

Blue phase—

Highest phase—

Supply Sizing

Suggested main switch—

Suggested supply—

Load groups—

Step-by-Step Demand Breakdown

Load Group	Description	Inputs	Formula / Rule	R (A)	W (A)	B (A)