What is the demand factor for three commercial ranges?

The demand factor is a significant concept in electrical engineering, particularly in determining the load that electrical equipment is expected to draw during peak usage. For commercial ranges, the demand factor reflects the likelihood that all appliances will not be in use simultaneously or to their full capacity, which helps in sizing electrical systems appropriately.

For three commercial ranges, the demand factor of 90% is commonly used because it represents a realistic estimation of peak demand, acknowledging that not all ranges will be at full load at the same time. This factor allows for efficient system design, ensuring that the demand placed on an electrical supply doesn't exceed what the supply can manage during high load conditions.

Using a demand factor that is too high would lead to oversizing the electrical system, resulting in unnecessary costs and equipment that isn't optimally utilized. Conversely, using a factor that's too low could risk overloading the system, leading to failures or safety hazards. Therefore, a demand factor of 90% balances the need for reliability and cost-effectiveness in commercial applications involving multiple ranges.