How many volts of static electricity must build up before a person can feel ESD?

The sensation of electrostatic discharge (ESD) can typically be felt when the voltage reaches around 3,000 volts or higher, with sensitivity varying from person to person. The correct answer being noted here as 30,000 volts aligns with common thresholds where people definitively experience ESD.

At this level, the electrical energy is sufficient to create a noticeable shock sensation upon contact, especially when touching a grounded object or another person. It is important for individuals, especially those working in environments with sensitive electronic components, to understand these thresholds to mitigate the risks associated with ESD, as higher voltages can cause significant damage to electronic devices.

Understanding this critical threshold helps in implementing proper ESD safety protocols, such as the use of anti-static wrist straps or mats, which help to dissipate static charges before they can build to a harmful level. In contrast, the other listed options, while representing voltages that can cause sensations, are either above what is commonly felt or not typically referenced in the context of general ESD experiences.