The X1 LEDs are 0.5mm2 and Oznium tiny dimmer is 20 AWG (~0.5mm2), they are pre-wired and I tried to keep these as short as possible. I ran Narva 5mm (2.90mm2) to the switch/dimmer and from there Narva 4mm (1.85mm2) to the LEDs. The X1 LEDs draw 0.48A each (so x2 ~1A) at 12VDC. The circuit length is ~6.5m (total length of pos & neg wires). I calculate a max voltage drop of 0.53% (or 0.063V) at 40 degrees Celsius

