What is the typical loading capacity of a transformer?

The typical loading capacity of a transformer is often considered to be 125% of its rating. This allows for a safety margin to account for short-term overloads without risking damage to the transformer, while still providing the necessary power to meet demand. Transformers are designed to handle slight overloading as part of their operation, particularly during peak usage times.

It’s important to understand that exceeding this limit can lead to overheating and reduced lifespan of the transformer, particularly if sustained for long periods. The rated capacity of a transformer is established based on its thermal and mechanical limits, and operating it beyond 125% can introduce risks that are generally not advisable in practical applications.

Deviating towards options such as 100% would suggest underutilization, while options indicating 150% or more could pose significant risks to reliability and safety.