Testing Solar Stringers

How to test your solar stringers to
make sure they're working properly.

Learn the full procedure for testing solar pv stringers. Procedure For Testing PV Solar Stringers

Testing pv solar stringers is easy. You can test your solar stringers one at a time by placing them in direct sunlight and using your multi-meter just like you did before...

...only this time, instead of testing just one cell, test the whole 9 cell stringer by setting your multi-meter to "volts" and...

Testing Stringers For Volts

  1. touching the multi-meter's (red) positive lead to the tab wire coming from the positive side of the first cell in your stringer.
  2. Then touch, the multi-meter's (black) negative lead to the tab wire coming from the negative side of the last cell in your stringer.
    How to test solar stringer rows the correct way.

The volt reading on your multi-meter should be close to (or just under) 4.5 volts. If it's not, there is a problem. Go back and check all the connections of your solar cells or check for cracks in the cells themselves.

Testing Stringers For Amps

Next, test your 9 cell solar stringers' amp output by setting your multi-meter to "amps" and...

  1. touching the multi-meter's (red) positive lead to the tab wire coming from the positive side of the first cell in your stringer.
  2. Then touch, the multi-meter's (black) negative lead to the tab wire coming from the negative side of the last cell in your stringer.
    Testing solar stringers

The amp reading on your multi-meter should be close to (or just under) 3.5 amps.

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