Which factor does NOT affect demand calculations in electrical systems?

In electrical systems, demand calculations are crucial for understanding the amount of electrical load that will be required at a given time. The length of wiring does not typically impact demand calculations because it primarily pertains to electrical resistance and voltage drop rather than the quantity of electrical power being consumed.

The factors that do affect demand calculations focus on aspects that influence how much power is being utilized. For instance, the time of day can significantly affect demand, as usage patterns often change depending on occupancy and activities (such as peak hours in the evening). Appliances' maximum capacity is also critical, as it determines how much load can be drawn from each appliance, thereby influencing the total demand. Weather conditions can play a role as well, especially for heating and cooling systems, which tend to draw more power during extreme temperatures.

In summary, while the other factors are directly related to the demands placed on an electrical system, the length of the wiring does not indicate how much energy will be consumed at a particular time, making it not a factor in demand calculations.