I had a productive day off work today maintaining the house solar system. Replaced weathered connectors and inspected the panels and wiring. The sun was out today, making this hot work, especially that the strings of panels were live up to 500 volts DC.
Even though the circuit breaker was disconnected and there was no current, the high potential voltage was there and it could be instantly lethal if something went wrong. I have tested what happens when wires break with this level of voltage and the arc flash of DC voltage is very dramatic. High voltage safety is quite motivational...
Unfortunately, the sun went down after I could do a full test of all sections, so that will wait until later this week.
