MAXIMUM DEMAND EXAMPLE
You will need Table C1 from AS3000 to follow the calculations below.
Example 1 - single domestic
The following calculations are based on a supply voltage of 230 V.
Determine the maximum demand of the single-phase consumers mains for a domestic electrical installation with the following load requirements:
25 lighting points
6 150 W exterior flood lights
3 100 W ceiling fans
17 double 10 A socket outlets (double GPO = 2 points)
9 single 10 A socket outlets
2 single 15 A socket outlets
1 5.2 kW wall oven
1 4.2 kW cook top
1 16 A room air conditioner
1 4.8 kW storage water heater
| Load | Group | Calculation | Demand |
| 34 - Lighting points | A(i) | 3A + 2A | 5 |
| 43 - 10A sockets | B(i) | 10A + 5A + 5A | 20 |
| 2 - 15A sockets | B(ii) | 10A | 10 |
| Oven - 5.2kW | C | 22.6A x 50% = 11.3A | 11.3 |
| Cook top - 4.2kW | C | 18.2A x 50% = 9.1A | 9.1 |
| A/C - 16A | D | 16A x 75% = 12 | 12 |
| H.W.S - 4.6kW | F | Full connected load | 20 |
TOTAL MAXIMUM DEMAND = |
87.4A |