An instrument used to determine the reduction in electrical potential along a conductor operating at relatively low power levels, given its length, current, and material properties. For example, this tool aids in determining if the power supply to a security system component is sufficient, given the distance of the wiring and the amperage drawn by the device.
This assessment is critical in electrical system design, ensuring that devices receive adequate power to function correctly. Undersized conductors can cause performance issues, overheating, and even equipment failure. Historically, such calculations were performed manually, but modern software offers increased accuracy and efficiency, thereby reducing the risk of errors and optimizing material usage.