When measuring AC voltage, what is the highest point in the wave referred to as?

The highest point in an AC voltage wave is referred to as the Peak. This term specifically denotes the maximum value of the voltage in one cycle of the sinusoidal waveform. Understanding the concept of Peak voltage is crucial in electrical work, as it represents the highest potential difference that can occur in the system, which is significant for equipment ratings and ensuring safe operation.

In contrast, the RMS (Root Mean Square) value is a way to express the effective value of the AC voltage, which is lower than the Peak value for AC waveforms; it's used primarily in calculating power. The Average value refers to the mean voltage over a complete cycle, which can be zero for a full-cycle sinusoidal waveform, making it less relevant for peak measurements. The Base usually refers to the zero reference level of the waveform, which is not a point of interest when discussing the highest voltage level. Grasping these definitions is essential for working with AC circuits and understanding their behavior in different contexts.