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the only thing
an essential bus gives me is
a list of items that I do not want to
shed
how many micro-processors in your
panel?
micro-processors have an ugly habit of rebooting
when you remove power, even for a moment.
cross-tie doesn't help that problem. by the
time you turn on the cross-tie you are looking at seconds to minutes to get back
whatever function those micro-processors were doing.
so you end up with some sort of diode
setup. ...which will end up being 2 diodes per important box
or
2 diodes per essential bus.
automatic also useful when you are in a high
workload situation, which you would be.
Colyn
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