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I have finished all the track installation and basic power wiring on my new layout but have run into a problem.  First, the layout has 3 zones, each controlled by a separate voltage source so I can run 3 trains at once.  I also want to be able to run a single train through all 3 zones.

When I want to run the same train through all 3 zones the train runs fine in zone 1. I designed the entry and exit from zone 1 to zone 2 by isolating the zones with a 1/4" separation of the center rail leading in out out of the two zones.  Everything works well.  A train could leave zone 1 and enter zone 2 controlled by a separate voltage source and continue on its way.  I did the same thing going from zone 2 to zone 3.  However, when the train goes from zone 2 to 3, there are very significant fire works.

The transformer for zones 1 and 2 is actually a single KW using sides A and B.   The transformer for zone 3  is side A on a second KW transformer.  Is it possible that zones 1 and 2 work  well together because the voltage is being supplied by the same coil but zones 2 and 3 rebel because the voltage is coming from 2 different coils?  I hope this all make  sense.  Incidentally, all of the outer rails in the entire layout are tied together. 

Thanks for any advice you can give me.

Jim Lawson 

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yes, it sounds like phasing or bridging.

The two transformers should be plugged into the same wall receptacle or a power strip from that receptacle.

next, try reversing the plug for the second KW for Zone 3 or test with a light bulb or meter for phasing. It seems more like this is the issue. There will be a small voltage reading when phased properly and high when not phased. O volts is theoretical.

Finally, when crossing into Zone 3, the voltage settings should be very close. If they are too far apart, you can get KW1 + KW2 voltage.

O Gauge Jim posted:

I flipped the plug and everything works great.  I feel a bit dumb for not thinking about the solution myself but that are what friends are for, to bail us out in times of mental lapses, and at my age I have plenty! 

Thanks much George  and Carl,

Jim

You're not the only one....   Right Gregg?

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