Re: Dell HP-1457F3 power supply
Don't quote me on this, but don't you need something regulating the power intake? As I recall, that's how the VGA power connection from a motherboard to a PSU works. The motherboard regulates the power intake, and I'm assuming if the PSU doesn't detect any regulation, would it not shut down automatically? Seems to me that would be a safety feature; you wouldn't want electricity flowing freely into an environment that can conduct it freely.
Like I said though, don't hold me to this. I'm no expert, and I'm certainly no electrician.