We have loaded a single rail 12V power supply with its normal rated output on the 12V rail, but took only one PCIE connector. The label said 62A and we started with 55 increasing to 58A. With this test we want to show that single rail 12V power supplies can be very dangerous since it is very easy to overload the connectors. The isolation for example can stand heat up to 80c and the test shows the temperature can rise well above 100c which led to a melting of isolation and connector.
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