WTIU Track Power Issue

Easy- you failed to isolate at the switches

I think they are isolated because when I sent power to the whole track and disconnected the inner loop connection, it did not receive power.

Also, why would the WTIU show power going out of each channel when power is only coming from one side of the Z4000?

@CyrilW posted:

Hello,

I'm powering my MTH Realtrax double loop with a Z4000 into a WTIU splitting the power from the Track 1 and Track 2 outputs to the two fixed channels on the WTIU. I'm hoping I can power each loop separately, but the when I turn on one handle or the other, it sends power to both fixed outputs.

Thinking maybe it has something to do with output assignment?

NO- Let's be 100% clear on this. Each channel through the WTIU or TIU is isolated. You could NEVER put power in one channel and have it come out another- that is absolutely not connected internally that way and never a setting.

It's YOUR TRACK that is connecting the 2 channels.

If you are using Fastrack switches- there is a 1 3/8 in isolation piece at the ends of the Fastrack switches. You only remove the jumper on 1, not both, at the junction. Again, removing this wire on the short pieces removes the connection of the center rail- thus causing an isolation joint.

If using other switches and track system- you have to use their plastic insulator pin or rail joiner for that system.

@CyrilW posted:

I think they are isolated because when I sent power to the whole track and disconnected the inner loop connection, it did not receive power.

Also, why would the WTIU show power going out of each channel when power is only coming from one side of the Z4000?

Because- clearly your wiring and track is backfeeding the WTIU and that channel, and thus the Z4000 channel too.

You are literally in this situation right now

Yes, was drawn for the TIU and still applies to the WTIU- your track plan and wiring is causing the short joining 2 channels.

Thanks. Just did some disconnecting of power and yes, it's the track. Thanks for the help.