Hello everybody,
I'm playing around with some LED strips and have a few questions. As I've searched for a good solution for my project, I've decided that I'll need 3-4 5m strips of 5v LEDs and I'll be powering them with a 300W PSU and a DigQuad Controller since it has fuses included already. But, while doing all this research, I have built up some questions about amperage that I need some assistance answering. (And probably just the basics of how electricity moves, to be honest here).
Details about the strips:
5m strips with 30 LEDs/meter. At full RGB brightness they consume 7.5A per strip.
I want to inject power every 5m to avoid voltage drop and keep color accuracy. Here are some questions. (Please note that I am not accounting for voltage drop over distance in these images, AWG of the wire, or the draw from the little MCU that will run the data):
Q1. If I make a number of t-junctions, does the main conductor still carry the full amperage of all the LEDs included in the circuit of that conductor? Or does the main wire have less load on it? (like in the top image)
Q2. In image two, is it correct to assume that using two "home runs" that also act as parallel runs would distribute the load and allow me to use a higher gauge wire? Again, are the T junctions helping me in terms of load? or do they only help distribute 5v power?
Q3. Does the current on a conductor dissipate as electrons are consumed? Meaning, if I have a conductor with 4 T junctions, will there be less current as the main conductor get further away from the supply source because of the LEDs 'using' the power?
Apologies if these questions are super elementary, but it's been driving me crazy!
Edit: just realizing I didn’t take into account the current that will be going through the strips themselves, as well