What does the point-to-point method allow us to calculate?

The point-to-point method is a systematic approach used in electrical engineering to calculate available fault currents at various points within an electrical system, including locations such as transformers, circuit breakers, and other significant points in the distribution network. This method involves analyzing the paths of fault currents, considering the impedance of system components, which helps in estimating the total fault current that can flow during a fault condition.

By utilizing the point-to-point method, engineers can identify how fault currents vary at different locations, which is crucial for the appropriate sizing of protective devices, ensuring the reliability and safety of the electrical system. This method supports decision-making regarding system design, protection coordination, and fault analysis, leading to improved safety measures against electrical hazards.