At what electrical degrees does peak voltage occur in an AC sine wave?

In an AC sine wave, peak voltage occurs at the points where the waveform reaches its maximum positive and negative values. This happens at 90 degrees and 270 degrees in the context of a full cycle of the sine wave.

At 90 degrees, the sine wave reaches its maximum positive peak, and at 270 degrees, it reaches its maximum negative peak. The values at these angles correspond to the zero crossings of the waveform, where the sine function transitions from positive to negative and vice versa.

Understanding these critical points is crucial for applications in electrical engineering and lineman work since they relate to how power is distributed and utilized throughout the electrical system. Furthermore, recognizing these degrees helps in timing for synchronization in various electrical applications.