How to Choose the Right Method for Connecting LED Modules
Connecting LED Modules with Series/Parallel Wiring
If the single series LED string is split into three, four, or more parallel sections; the voltage at the beginning of each branch will be near 12 VDC (in this example). Also, since the current being drawn from the power supply by each branch is less, the voltage drop between the first and last module in each branch is less. Because of this, each module in every branch sees closer to its rated input voltage (i.e. 12 VDC), so the total power drawn by the series/parallel wiring method is significantly higher than the same number of LED modules all wired in series.
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