Peak transient voltage refers to the highest voltage level that occurs during sudden and momentary power surges or spikes in an electrical system. Other synonyms for this term include surge voltage, voltage spike, high voltage pulse, electrical surge, and voltage transients. These synonyms are often used interchangeably in the electrical industry when referring to the same phenomenon. Peak transient voltage can cause damage to electronic devices and equipment if not adequately managed, which is why surge protection devices are often installed in electrical systems to limit the impact of these voltage spikes. Overall, knowing the various synonyms for peak transient voltage can help professionals in the electrical industry better understand the risks associated with sudden power surges and how to protect electrical equipment.