When panels are wired in series, you connect the positive terminal of one panel to the negative terminal of the next.
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Whether in series or parallel, the panels' total power capacity does not change. However, choosing between series and parallel connections depends on the input parameters of your solar charge controller (MPPT), solar pump controller, or inverter combo.
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Connecting PV panels in series increases the voltage but amps remain the same, but in parallel connection, current and power output increase.
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Setup for Isc: Switch your multimeter to the DC current mode. Connect the Probes: Use an appropriate tool to short the panel leads and connect the multimeter in series. Again, compare this value to the specifications.
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