Circuit protection

Shown here,made up for 6 track loops.

http://www.jcstudiosinc.com/Bl...=486&categoryId=

Dale H

Dale has the answer in well documented form there.

I will point out there are many different fuse holders available that mount thru hole or flat on top.

Note, if you are mounting flat on top of a surface, make sure you get one that keeps crud out of the holder - that can end up shorting past the fuse.

Pretty much understand what Dale is doing, but it appears that all the protection is between the transformer and the track.  How does this relate to my system which is transformer to TPC to block controller to track buses.  Will this system work for me, and does this protection in any way impact TMCC operations?

Dale H has it right--between the Trnsformer and the track.

The circuit breakers/fuses protect the transformer itself from damage due to Overcurrent.

The Transient Voltage Supressors[TVS] protect equipment circuit boards and fragile wire runs from Voltage Spikes, which emerge in the transformer and will not trip a breaker or blow a fuse. 

Works well with my TPCs linked to 180 PoHos. I routinely run TMCC and occasionally Conventional via Cab 1 remote with the Cab Base unplugged.

Mr H.I don't understand the need for rectifiers.And it is hard to tell how they are wired in the pictures.Is there a schematic available for this?Thanks.Nick

They are not common rectifiers, (more accurately bi directional 36 volt zener diodes) they are a TVS device for spike suppression mounted down stream of the breaker. They are wired across the common and center rail wire,just as if you are shorting them out. The circuit breaker is in series with the center rail wire.  

OK what amp breaker?Cant see from pics thnx.

Since it was specified in the text as a Mouser 655-w-28-XQ1A-10, one would have to assume it's a 10A breaker.

Mr gun man,Thanks for treating people like they are stupid when they ask a simple question.When building an electrical system or a system component,we work from what is called a schematic print.It is not normal procedure to attempt to extract the proper information out of a long series of written paragraphs.Information can me missed or improperly interpreted.Mr gun guy you are a hack.

Hello Nick

normally one would use 10 amp breakers or a fuse if desired.  This would be for a ZW or Kw.  However if using a starter set type 90 watt transformer,you could use a lower value one such as 8 or 5 amp.. The purpose of the breaker is really to protect the wire. Properly wired with sufficient gage buss sizes, the 10 amps breaker should protect it. The transformer itself should still have its own factory installed internal thermal breaker in good working order. This will protect the transformer. However it is much too slow to protect the wire IMO,thus we add another device.

Dale H

Thank you Dale I will be adding this system.