The concept of "maximum demand" refers to the highest amount of electrical power that an installation is likely to draw from the supply network over a specific period, usually measured in kilowatts (kW) or kilo-voltamperes (kVA). Calculating maximum demand is essential for sizing electrical equipment like transformers, generators, and cables.
Table C2 within AS 3000 deals with the allowable values of maximum demand for residential and commercial premises. This table provides the basis for determining the maximum demand for various types of installations based on their characteristics, such as the number of dwelling units or types of loads.
In the world of electrical design across Australia and New Zealand, (the Wiring Rules) is the primary roadmap for calculating maximum demand in non-domestic installations. While Table C1 handles homes, Table C2 is essential for sizing cables and switchgear in commercial and industrial settings—from small offices and shops to massive factories and hospitals. as 3000 maximum demand table c2
This group includes air conditioning units and commercial kitchen equipment. In most non-domestic settings, heating and cooling equipment is often calculated at because these systems frequently run at peak capacity during extreme weather. Group D: Motors
The specific details of Table C2 can vary depending on the edition of AS 3000 being referenced, as standards are periodically updated. However, here are some general points you might find in or related to a maximum demand table: The concept of "maximum demand" refers to the
In the context of , Table C2 (often found in Appendix C) provides specific Demand Factors (or Diversity Factors) for different types of electrical equipment.
: The table provides factors or values used to calculate the maximum demand for an electrical installation. This can include diversity factors that allow for the possibility that not all circuits or loads will be at their peak demand simultaneously. This table provides the basis for determining the
This is where diversity plays the biggest role. Socket-outlets (GPOs) are grouped by their rating:
Business premises (offices, shops, schools, factories, and churches). Key Load Groups in Table C2
Typically calculated as 1,000W for the first outlet and then a reduced wattage (e.g., 750W or 400W depending on the building type) for each additional outlet.