What method is typically employed to determine peak load?

Determining the peak load typically requires monitoring electrical usage data over time because this method captures real-time usage patterns and fluctuations that occur during different times of the day or different seasons. By analyzing this data, it is possible to identify the maximum amount of power that is drawn at any given moment, which is crucial for designing electrical systems that can handle those peak demands efficiently.

Relying solely on appliance ratings, manufacturer specifications, or calculating average monthly consumption does not provide a complete picture of actual performance. Appliance ratings offer theoretical maximums but do not account for the specific usage patterns of those appliances within a particular environment. Manufacturer specifications can vary and may not reflect real-world performance conditions, while average monthly consumption can smooth over peaks and valleys in usage, potentially missing critical load spikes that inform proper system design. Monitoring actual electrical usage ensures that the calculated peak load reflects true operational conditions, enabling effective planning for sources, feeders, and service requirements.