(JP10322885-A)      The photovoltaic power generation apparatus includes a solar cell array. A non-insulated type inverter converts direct-current electric power output from the solar cell array into alternating-current electric power. An earth leakage circuit breaker is provided between the non-insulated type inverter and the commercial AC power system. Stray capacitance Ca(f) of the solar cell array with respect to a ground potential and circuit breaker interrupting rating EL(ma) of the earth leakage circuit breaker have a relationship of Ca &lt; EL/3.    The solar cell array includes several solar cell modules each of which has solar cells fixed on a reinforcing plate which is made of metal. The solar cells are formed on a metal substrate. The solar cells have non-crystalline semiconductor. The solar cell module forms a builds material.    USE -   For use in connection with commercial AC power system.    ADVANTAGE -   Prevents spurious operation of circuit breaker when current flows through earth capacitance.    (US6107560-A)      The photovoltaic power generation apparatus includes a solar cell array. A non-insulated type inverter converts direct-current electric power output from the solar cell array into alternating-current electric power. An earth leakage circuit breaker is provided between the non-insulated type inverter and the commercial AC power system. Stray capacitance Ca(f) of the solar cell array with respect to a ground potential and circuit breaker interrupting rating EL(ma) of the earth leakage circuit breaker have a relationship of Ca &lt; EL/3.    The solar cell array includes several solar cell modules each of which has solar cells fixed on a reinforcing plate which is made of metal. The solar cells are formed on a metal substrate. The solar cells have non-crystalline semiconductor. The solar cell module forms a builds material.    USE -   For use in connection with commercial AC power system.    ADVANTAGE -   Prevents spurious operation of circuit breaker when current flows through earth capacitance.