Patent ID: 8599031

Claim:
A system for detecting stray voltage in a conductive object, comprising a pick-up element separated from the conductive object and capable of detecting an electric field from the conductive object, electrical circuitry electrically connected to the pick-up element capable of determining a voltage level corresponding to the electric field detected by the pick-up element, wherein the electrical circuitry generates, based on a comparison of the determined voltage level relative to a reference voltage level, an indicator signal representative of whether stray voltage is present in the conductive object, a housing for enclosing the electrical circuitry, a support attached to the housing for mounting the housing on or near the conductive object such that the pick-up element remains separated from the conductive object, and an indicator for indicating to a user of the system, based on the indicator signal, whether stray voltage is present in the conductive object, wherein the indicator comprises a visual indicator for visually indicating to the user whether stray voltage is present in the conductive object, the visual indicator comprising a first externally visible light which displays a first color when on and a second externally visible light which displays a second color, different from the first color, when on, the first externally visible light turning on when indicating a presence of stray voltage in the conductive object and the second externally visible light turning on when indicating an absence of stray voltage in the conductive object.