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[QUOTE="Whitey-, post: 134350, member: 39146"] Thank you for the feedback! I've actually never used a fuse block before, I assumed (incorrectly) I guess that the power went left to right across it as per my drawing. I guess it makes sense that it doesn't - why would there be two fuses in a row? Ok, so you feed the 5V (in my case) into the directly onto bottom of the fuse block, that makes sense. I guess this fuse block has way more outputs than I need then! Does this wiring look more accurate (I haven't updated the fuse sizes or source wires to the fuse block, but good points thank you)? [ATTACH type="full" width="270px"]24244[/ATTACH] It did look high to me 😄. I was calculating on [URL='http://www.da-share.com/calculators/led-strip-string-current/']David's calculator[/URL], but I realise now I was doing it at 1000 per output, not per controller, which is a lot more reasonable: [ATTACH type="full" width="529px"]24242[/ATTACH] That said, I would like to be able to support 1000 pixels on a single output if need be, which makes a 60A fuse look correct: [ATTACH type="full" width="527px"]24243[/ATTACH] However now I'm having a look at my pigtails, it looks like they're 0.75mm2, which is 18AWG I believe. My back-of-the-envelope maths leads me to believe I can run about 16A (~300ish pixels) in there, assuming I'm injecting every 100 pixels or so, making each section 5.33A or so. I think my 1000 per output might have been reaching. So I guess based on that, I can move down to 20A fuses on there? [/QUOTE]
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