Applicable to Single Domestic Installations or individual living units per phase.
The total maximum demand would be: 8 kW + 3 kW + 1.5 kW = 12.5 kW maximum demand table c1
While the exact format varies between standards (e.g., AS/NZS 3000, IEC 60364, or BS 7671), a typical "Table C1" for maximum demand is organized by load type. Common categories include: Cooking Appliances (> 10A) 50% of the connected
10A for the first 20 points + 5A for each additional 20 points. Cooking Appliances (> 10A) 50% of the connected load (full load current). D Air-conditioning / Space Heating 75% of the connected load of the equipment. F Storage Water Heaters 100% of the connected load (no diversity allowed). Important Rules for Calculation Important Rules for Calculation If you calculate the
If you calculate the Maximum Demand correctly but fail to apply the correct , you may select a cable that is too small for the environment. For example, a cable that can carry 50 Amps in free air might only be able to carry 35 Amps if it is buried in wall insulation. If you size it for 50 Amps based on the wrong method, the cable will overheat and pose a fire risk.
The rows represent the number of circuits or loads being supplied. The table provides a set of diversity factors, which are used to calculate the maximum demand.