Warm/cool white dual LED strip parallel wiring advice

• Series: Current flows through one strip after another. Not recommended for 12V LED strips, because each strip requires 12V. If you wire in series, the voltage needs to add up (e.g., 4 strips × 12V = 48V), which your 12V power supply cannot provide.
• Parallel: Each strip receives 12V directly from the power supply. This is the correct method for your setup.

💡 Conclusion: Wire all strips in parallel.

• Each strip has 2 negative lines (for warm & cool) and 1 positive line.
• Connect all positive lines of one shelf together, and do the same for all negative lines.
• Do this for each shelf, then connect all 4 shelves in parallel to the 12V power supply.

Your total power is 128W at 12V. Current I=P/VI = P / V:

• I = 128W / 12V ≈ 10.7A

Recommended wire:

• 1.5 mm² (AWG 16) is sufficient for ~11A.
• For longer runs (>2–3m), use 2.5 mm² to reduce voltage drop.

• Use twisted or soldered connections with heat shrink or connectors.
• Avoid shorts between positive and negative wires; 12V at 10–11A can generate heat.
• Check polarity before powering on.

• Series: ❌ Do not do it
• Parallel: ✔ Correct choice
• Wire: 1.5–2.5 mm²
• Total power: 128W at 12V → current ≈ 11A