Wire gauge for power

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Marty33
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Wire gauge for power

Post by Marty33 » Tue Jul 25, 2017 4:36 pm

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

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Robochris
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Re: Wire gauge for power

Post by Robochris » Wed Jul 26, 2017 3:55 pm

I ran cat5 for everything. 26awg I think? 22 is recommended though.

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Eccho
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Re: Wire gauge for power

Post by Eccho » Thu Jul 27, 2017 1:14 am

Marty33 wrote:
Tue Jul 25, 2017 4:36 pm
Hello all.
Hi,
I was bothered about optimal wire gauge as well.

www.sudomod.com/forum/viewtopic.php?f=25&t=3043&p=32499
www.sudomod.com/forum/viewtopic.php?f=46&t=3139&p=33655

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abrugsch
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Re: Wire gauge for power

Post by abrugsch » Thu Jul 27, 2017 2:26 am

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")

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Marty33
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Re: Wire gauge for power

Post by Marty33 » Thu Jul 27, 2017 4:27 pm

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 :)


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tyler335
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Re: Wire gauge for power

Post by tyler335 » Thu Jul 27, 2017 9:19 pm

Wire ampacity chart

Image

For power wires, use 24 gauge wire or larger. 24 gauge is rated for 2.1A.

Signal wire can be much smaller.

.
Check out my latest GBZ build: http://www.sudomod.com/forum/viewtopic. ... 779#p35779

Image.......Image.......Image

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