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Reply to "circuit breaker location"

@SteveH posted:

Would there be an advantage to installing a pair of instant breakers like the Airpax, one at the TIU Hot input (red) and another at the TIU common output (black)?

My thinking for the one at the input side is in line with protecting the TIU electronics as Vernon and Mike have mentioned.  The one at the output would be for a different scenario, not yet mentioned in this thread.  There could be an unexpected source of power somewhere on the layout that could back feed current into the common return to the TIU.  This second breaker on the TIU common output would provide protection in this case.

I'm trying to play this scenario but IMO opening the common for any reason just invokes far too many problems. House wiring is similar- you never want an open neutral (AKA Common). In theory, an open Common causes just such differential voltages. Ideally, just have a breaker in every power source (example- aux power terminals).

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