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I was on a layout tour yesterday and the owner was having a problem with his layout.  Everytime he has a short the whole layout drops.  This problem surficed when he added in a Ramp Meter throught which the power is routed to the layout.  The path is as follows Command station--->Ramp Meter --->PSX-4, PSX-2, PSX-2 wired in parallel--->Power to each block in series.  Blocks are isolated from each other as far as I can tell.  There are no jumpers installed on the PSXs (mechanically set to 2.8A).  CV 49 is set to the minimum breaker trip value  ~1.8A.  The Command station is a 5.0A Power pro.  Its setpoint is 5.1A per the manual and is not adjustable.  The command station is in fact tripping before the PSXs verified by the flashing fault light when dead short is applied.  Other Data: The owner says that it was working correctly before the Ramp Meter was installed. Same thing happens when Ramp Meter is taken out of the circuit. All 8 PSX breakers have melted shrink wrap on their transformers.  I personally hand over handed the wire from the command station to the breakers, there is no bypass around the breakers.  Is it possible that all 8 of the PSX's failed at the same time when the Ramp Meter was installed? Thanks
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