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If we've mostly agreed that we're sizing fuse/CB to protect the wire and not the component, what would be the point of redundant feeds to a common power line inside the box?
What failure mode are we protecting against with this scheme? ... Jim S.
Al Gietzen wrote:
At some point I asked Tracy if redundant power leads were truly redundant.
As I recall, he stated that the two power leads are connected (to each
other) inside the box.
I'm pretty sure I had the same conversation, and the same answer.
You may recall last week I mentioned in a posting the I had redundant critical circuits, and “almost” redundant power to the EC2. The power inputs are common inside the box (at least on mine). However; you can still run two feeds and isolate them just outside the box with diodes. At least gives you redundancy to that point, and there are redundant controllers inside.
Best to use Schottky diode for lower forward drop – might allow running a bit longer if your alternator fails and you are running your batteries down.
Al
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