voltage: a measurement of the pressure from an electrical circuit’s power source that pushes current (charged electrons) through a conducting loop, allowing them to do work (such as powering a TV).

During a home inspection, the inspector will inform you of the estimated voltage supplied to the home. Estimated voltage is based on a typical US power supply rating for alternating current (typically 120V/240V). Variation in the actual voltage supplied to the electric panel(s) can vary, based on numerous variables.