Blowing power supplies
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Oh, ok, I think we are meaning different things when we say PSU rail. An ATX PSU for example typically has 3v3, 5v, and multiple separate 12v regulators, each of which is only rated for a portion of the total load and has separate wires, connectors, etc. If there are two 12v rails then there are two separate sets of 12v power equipment that are independent of each other. The ATX PSU is nominally rated for the total load across all rails but no single circuit can provide that much power.
Simple industrial power supplies like a Meanwell LRS-xxx-24 have one 24v rail with multiple output terminals to hook up loads to the single shared power supply.
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Ah yes, the supplies I have are more like the Meanwell. The reason I used two outputs was because the wire gauge was too thick to fit into just one ring terminal. So I thought it would need more contact to maintain it's AWG rating.
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I've been using the Meanwell SE-600-24 for a few days now, turned down to 22.5v, and it doesn't drop below 22.1v with everything going. Additionally, I'm assured it has a cut off built in at 125% of it's rated wattage, so I believe it will stop itself before it blows.
