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Wire gauge for power
Posted: Tue Jul 25, 2017 4:36 pm
by Marty33
Hello all.
For the power part, i must connect USB, raspberry, screen.... but i must choose the Wires.
28AWG ? 26AWG ? 24AWG ?
Multi or Mono wire ?
Big thanks all
Re: Wire gauge for power
Posted: Wed Jul 26, 2017 3:55 pm
by Robochris
I ran cat5 for everything. 26awg I think? 22 is recommended though.
Re: Wire gauge for power
Posted: Thu Jul 27, 2017 1:14 am
by Eccho
Re: Wire gauge for power
Posted: Thu Jul 27, 2017 2:26 am
by abrugsch
well, it depends on what you've put in your build and which power supply you're using...
some builds with everything including a Pi 3 AND the kitchen sink could easily draw 3A or more total. Minimal Pi 0 builds will be around 0.5A. lets assume your build is more typical and around 1A, 24AWG is good for up to around 3A (depending on a few factors) but I would stick to larger if there's even a chance of getting near 3A (even spikes)
(BTW I used this:
http://circuitcalculator.com/wordpress/ ... alculator/ with wires in bundle = 1 and wire length 3")
Re: Wire gauge for power
Posted: Thu Jul 27, 2017 4:27 pm
by Marty33
I work on Wii U build same time.
I have :
- 16A Protection Board Circuit
- Pololu 5V, 6A Step-Down
- Pololu Big Pushbutton
- 2Cells Single Lithium ion Battery Charger Module 1-2A
All this to make it work: 2 Battery (2x3500mAh 20A 3.7V) for my 6.5 screen and RPI3
26 or 24 AWG for this
?
Big thanks
Re: Wire gauge for power
Posted: Thu Jul 27, 2017 7:53 pm
by abrugsch
Pi 3 I would say at least 24 or bigger
Re: Wire gauge for power
Posted: Thu Jul 27, 2017 9:19 pm
by tyler335
Wire ampacity chart
For power wires, use 24 gauge wire or larger. 24 gauge is rated for 2.1A.
Signal wire can be much smaller.
.