i am making a arduino project using 5v ws2812b 300leds/meter. Its going to be a motion activated led strip that runs along the side of the stairs. I will be using 3.5m of the led strip so 210leds at 60mA so if all white on full power they will consume 12.6 amps.
I have a 5v 40a meanwell power supply so plenty of overhead. I will put a 1000uf capacitor on the positive and ground leads of the wires just before they reach the leds and 480 ohm resistor on the data line.
I am concerned with voltage drop over 3.5 meters so i will run the wire along the led strip and inject power every meter. My question is what gauge wire should i be using?
The psu will be under the stairs so wire will be 5m long. I am worried about heat and would like some advice about any safety or fire concerns i should be thinking about.
Should there be a fuse in the circuit?
This is the best schematic i can find to show how its wired, where would the fuse go? Power is coming in from both ends of the led strip, would this suffice for a 3.5m strip