Forum Discussion
BFL13
Dec 20, 2014Explorer II
You want a switch on one of the two wires going into the controller from the array. Some controllers don't like running a load while the battery is disconnected.
Also you can then "turn off" the solar to see what any other 12v sources are doing or to see what the solar itself is doing by comparing when it is off or on.
If you can get your meter across the array side of that switch and the other wire's terminal at the controller, you can measure array Voc and Isc with the switch open without having to go to the panel and disconnect that to measure there.
Also you can then "turn off" the solar to see what any other 12v sources are doing or to see what the solar itself is doing by comparing when it is off or on.
If you can get your meter across the array side of that switch and the other wire's terminal at the controller, you can measure array Voc and Isc with the switch open without having to go to the panel and disconnect that to measure there.
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