Abstract: An electrical integrity test system for boats provides circuitry for evaluating the integrity of the boat's galvanic isolator. The integrity test system includes two single reference diodes and a circuit for applying DC voltages across said reference diodes and said galvanic isolator. Another micro-controller stores the values of the voltage drops across the galvanic isolator and the voltage drops across each reference diode and subsequently determines if the voltage drop across the galvanic isolator is that to be normally expected. If it is not, then the system informs the operator that the boat's galvanic isolator is not operating properly.

Abstract: An electrical integrity test system for boats provides circuitry for evaluating the integrity of the boat's electrical distribution AC grounding system when the boat is connected to a dock's electrical distribution system, and the integrity of the boat's galvanic isolator. The electrical integrity test system also includes a polarity detecting circuit that will activate an alarm when it detects a dock's hot and neutral conductors to be reversed. Additionally, the electrical integrity test system includes an AC ground current detecting circuit that continuously monitors the boat's AC grounding conductor for the presence of AC current. A system controller controls selected functions and sequence of functions of the described circuits.