MIKE CT:
The Z4000 is rated at 180 watts per output. With a voltage output from the Z4000 of 18 volts the Z4000 should be able to deliver 10 amperes continuously. The power box shown will disconnect power when the steady state current through the box is maintained at 10 amperes or above. In the event of a dead short the Z4000 would probably react before the external circuit breaker. At least the external breakers are there as a backup.
I also have separate individual circuit breakers for all my TIU outputs. These are 5 ampere circuit breakers.
Additionally I will also have individual 3 ampere circuit breakers for all individual power feeds to the track. As a result a derailment (and short) at any one location on the track will NOT affect any other track feeds.
Emergency Shutdown control box
Not shown is my Emergency Shutdown control box. This E-Stop box will contain high current relays. I will have up to 4 "E-Stop" buttons available on my layout. If any one of these buttons is pressed all power from my Z4000 outputs will be disconnected and latched "off". I will also have a reset button on the E-Stop control box to restore power.
