PSU w/ dual 12V rails

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When/what/who would one need dual 12V rails from a PSU?

 

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In article <ileGe.2062$gt5.1250@newssvr17.news.prodigy.com>, Gary C
says...
> When/what/who would one need dual 12V rails from a PSU?
>
When the wiring isn't up to handling the current down a single wire.


--
Conor

-You wanted an argument? Oh I'm sorry, but this is abuse. You want room
K5, just along the corridor. Stupid git. (Monty Python)

 

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"Conor" <conor.turton@gmail.com> wrote in message
news:MPG.1d54310fbd06cefb98a551@news.individual.net...
> In article <ileGe.2062$gt5.1250@newssvr17.news.prodigy.com>, Gary C
> says...
>> When/what/who would one need dual 12V rails from a PSU?
>>
> When the wiring isn't up to handling the current down a single wire.
>

Conner:
Am I reading this right?
Do you mean, when the 12V "draw" exceeds the one rails ability?

If we're on the same page, then why not buy a PSU with more amperage
on its single 12V rail?