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Short found! Isolating DCC Yard?

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  • Member since
    February 2008
  • 2,360 posts
Posted by kasskaboose on Thursday, May 7, 2020 7:16 AM

Thanks everyone!  Yes,  I figured out  the cause by removing all the yard wiring.  In doing that, I figured out another problem: why I could not switch turnouts b/c they were against each other.

The good news is I have nothing to purchase.

  • Member since
    July 2006
  • From: Sebring FL
  • 842 posts
Posted by floridaflyer on Wednesday, May 6, 2020 6:22 PM

What Rich said

  • Member since
    September 2004
  • From: Dearborn Station
  • 24,281 posts
Posted by richhotrain on Wednesday, May 6, 2020 5:44 PM

Why not just correct the wiring so that the yard wiring is in phase with the mainline wiring? No need for insulators in that event.

Rich

Alton Junction

  • Member since
    December 2004
  • From: Bedford, MA, USA
  • 21,483 posts
Posted by MisterBeasley on Tuesday, May 5, 2020 9:31 PM

It's not usually necessary, but consider isolating the yard with its own breaker.  That does make it easier to debug problems and shorts.

It takes an iron man to play with a toy iron horse. 

sol
  • Member since
    January 2007
  • 34 posts
Posted by sol on Tuesday, May 5, 2020 6:29 PM

selector

 

However, I don't use plastic.  I eyeball the gap to be about 1mm long, and just make sure that the rail heads are well-matched for height and alignment horizontally.  I won't use plastic joiners (tried them once and hated the fat look), and I'm much too lazy to fashion plastic fillers.  So, I just make slight gaps where I need them, and leave them open.

 

 

I find once track & rail painted and ballasted, can't easily see the insulators & just leaving a gap is OK if the temperature in the layout room doesn't vary by much to let the rail expand if the room gets hot.

 

Ron

  • Member since
    February 2005
  • From: Vancouver Island, BC
  • 23,330 posts
Posted by selector on Tuesday, May 5, 2020 4:58 PM

I routinely wire the rails between all of my yard turnouts to be individually powered.  I know some prefer to either isolate ladders with power-routing turnouts, especially on stub-ended yard ladders, or they gap or do something else.  I also gap, and that way inadvertently mis-lined points won't cause a short here and there when a metal wheel crosses the turnout.

However, I don't use plastic.  I eyeball the gap to be about 1mm long, and just make sure that the rail heads are well-matched for height and alignment horizontally.  I won't use plastic joiners (tried them once and hated the fat look), and I'm much too lazy to fashion plastic fillers.  So, I just make slight gaps where I need them, and leave them open.

  • Member since
    February 2008
  • 2,360 posts
Short found! Isolating DCC Yard?
Posted by kasskaboose on Tuesday, May 5, 2020 4:35 PM

I found the cause of the short from earlier:  I mis-wired the yard somehow and when I flipped the Atlas turnout (used throughout layout) a short.  Before removing wiring, should I isolate the DCC-powered stub-ended yard?  I have two turnouts' diverging tracks connected to each other that lead to the yard--one turnout comes off the mainline and the other leads to the yard throat and engine facility.  I thought to isolate one rail w/ a plastic joiner, unless that's pointless. 

I read earlier about the topic and it seems that the OP needed to isolate if running multiple locos.  I plan to have a loco arriving from the main and a switcher in the yard.

If I need to isolate the yard, how to provide power to it and check for shorts?

Thanks!

 

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