Author Topic: Wire Length  (Read 837 times)

Offline B_Unit

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Wire Length
« on: August 14, 2014, 04:33:09 PM »
So this is a bit of a silly question but here it goes,

So I have a usb Hub that has an extra power supply,

this power supply lets off 12 Volts 3 Amps but the wire on it is kak short and I would like to make it longer,

So I want to extend it by 2.5 meters, should I use the Same thickness of wire or should I use a wire thinner than the original one ?

Regards

Byron

Offline darrylo

Re: Wire Length
« Reply #1 on: August 14, 2014, 04:56:31 PM »
Thicker would be better. Less resistance so less voltage drop. Important for lov voltage dc.
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Offline B_Unit

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Re: Wire Length
« Reply #2 on: August 14, 2014, 05:11:28 PM »
Ok, Thanks  :thumbs:

Offline Skylark

Re: Wire Length
« Reply #3 on: August 14, 2014, 11:31:10 PM »
What kind of USB hub would have a 12v 3A powersupply?
They are typically 5v max around 2A
Music is in the Mind

Offline Steerpike

Re: Wire Length
« Reply #4 on: August 15, 2014, 12:56:30 AM »
Each port should be able to deliver 2A if negotiated, and if several devices on several hub ports all want power, the power supply needs to be able to provide.

Don't use thinner wire unless you are certain you will never use high-current devices plugged into the hub.

Offline Skylark

Wire Length
« Reply #5 on: August 16, 2014, 03:01:56 PM »
Suppose if it's a USB 3 hub but 500ma is the max per port on USB 2?
But either way 5v is the USB spec not 12v.
Music is in the Mind