Date   

Re: Bus wire

loumickie
 

I prefer individual rolls of solid wire for my bus; in my case I'm using #12 for the bus due to long runs. Romex would need to be stripped apart which is a pain.

Lou


Re: Bus wire

Steve Hubbard
 

I use #14 Romex on my layout for several reasons:  

1)  It's much cheaper than buying rolls of solid.
2)  It gave me the free solid copper conductor to connect the floating grounds on my Command station and Boosters.
3)  It's easy to strip the insulation off with a cable tool or a razer knife with blade extended 1 notch.

I use a drill to twist (3 per foot) the Romex in any length I need.  I have no issue separating the conductors to use "T" tap connecters for sub buss and feeders.


Re: Bus wire

Jim Betz
 

JDSSR (I don't know your name),

  The wire size in Romex is fine.  The cons, as I see them, are that it isn't as flexible
as the same size wire without the extra insulation -and- that you can't twist Romex.
In addition, I like to use one of those wire strippers that "spreads" the insulation
of the track bus before I solder feeders to it (something you can't do with Romex).
Most Romex has a ground wire (uninsulated copper) - you don't need that for your
layout DCC wiring.
 
  If I were you I'd just get "solid 14 gauge wire" ... in as many colors as you need
for your layout.  My layout has 6 power districts - so I got 3 different colors of solid
14 gauge and used them in different combinations for my track bus.  I'm using
Cat 5/5E/6 wire for the feeders (no more than 18" long) to run from the track bus
to the track itself.
  I cut - and twist - 50 foot lengths of pairs of solid copper wire for my track bus
"stock".  And cut that to length as I do the actual wiring.
                                                                                                - Jim in the PNW


Re: Bus wire

Jerry Michels
 

If Romex can easily handle household AC, I am sure it will easily handle our amps and volts. Jerry Michels


Re: Bus wire

Don Vollrath
 

You can use Romex as a source for buss wire. But removing the outer wrap without causing any damage to the insulation is not that easy.

I don’t see any advantage of using romex, other than initial availability (you happen to have a spool in your closet) and maybe cost per foot vs two individual spools of #12 or 14 AWG stranded. Stranded is easier to work with. Either way… Don’t forget to make twisted pairs before installation as DCC bus.

DonV


Re: Bus wire

Steven Haworth
 

It's ok, but stranded will give you more physical surface area, which I believe works better for handling the AC-like frequency of DCC.  I read the details somewhere years ago, but don't remember all of it just now.  But - I ended up going w/ stranded.

Another consideration... I have some long wiring runs, and for some of the hidden track I'm using current detection, with the detection in a somewhat central location.  The details of that story are here - https://rgsrr.blogspot.com/2011/10/in-which-steven-discovers-capacitance.html.

But briefly, I ended up having to physically separate the two buss wires on some runs, and that's something you wouldn't be able to do w/ Romex.


On Fri, Apr 8, 2022 at 10:19 PM jdssr <jdssr@...> wrote:
Hello all. What are your thoughts on using Romex for the bus wires? Pros and Cons. I like the fact that it's solid copper vs stranded. Thanks.


Bus wire

John DeSantis
 

Hello all. What are your thoughts on using Romex for the bus wires? Pros and Cons. I like the fact that it's solid copper vs stranded. Thanks.


Re: PHOTO: L. Varady TT Auto Reverse Wiring

Lawrence Varady
 

Understood,
Just IF and When a short occurs.

Thx


Re: PHOTO: L. Varady TT Auto Reverse Wiring

Don Vollrath
 

Short answer- Yes. But…
The TT polarity correction will occur only as steel wheels cross the rail gaps between the TT and other tracks of opposite polarity and cause a temporary short circuit. The AR-1 will not switch just because the TT rotates to a new position.

DonV


PHOTO: L. Varady TT Auto Reverse Wiring

Lawrence Varady
 
Edited

Hi,
I'm getting ready to wire the AR-1 as follows:

AR-1 INPUT +/-: BLUE POWER DISTRICT FOR ALL TT RAYS

AR-1 OUTPUT +/-: TABLE TRACK INPUTS

Will the AR-1 reverse the polarity of the TT TRACK to match the wired polarity of each TT RAY as needed?

Thx


Re: electrical block not powering the train

frank@...
 

I would like to thank all you guys and gals for the excellent comments and suggestions which I have followed up on. I also learned a lot in the process! As it turns out, the problem was with the electrical connection from the bus terminal block to the DCC controller. I forgot to tighten the screw adequately on the terminal block for the one bus wire and once I tightened it, it suddenly started working! I was surprised at that since it seems like there still should have been a connection there since the bare wire was in the slot. Lesson learned! Dont overthink things too much and just make sure the basics are right! Thanks again! 


Re: electrical block not powering the train

Rob Toler
 

This might be a “have you plugged it in?” kind of question but have you confirmed your getting voltage to that section?

 

Rob

 

From: w4dccqa@groups.io <w4dccqa@groups.io> On Behalf Of frank@...
Sent: Thursday, March 31, 2022 3:21 PM
To: w4dccqa@groups.io
Subject: [w4dccqa] electrical block not powering the train

 

I finally just finished installing my two HO tracks and associated buss lines and the connections to the Digitrax controller. Three of my four electrical blocks are operating fine but one of the blocks is not powering the train for the some reason. I checked all the electrical and track connections but I cannot see anything that would cause this section not to operate. Any ideas on what else I should check or any actions  i  should take to find and fix this problem?

Frank 


Re: question on buss wire connections

Don Vollrath
 

Yes… that’s why I said (the R/C should be) “located so that any current drawn is not measured by any track current occupancy sensor. ”

DonV


Re: electrical block not powering the train

JoAnn Donaldson
 

Sounds like you have the feeders reversed on that one section.

JoAnn

On Thursday, March 31, 2022, 05:58:47 PM CDT, Lee Phillips <leenbeau@...> wrote:


Can anyone help me with a fig 8 layout using a 4x8 sheet of plywood.
I am using "o" 42in the curves.  Maybe I need something odd in the middle ??
Many thanks.
Lee Phillips (leenbeau@...}

On Thu, Mar 31, 2022 at 5:44 PM whmvd <vandoornw@...> wrote:
Hi Frank,

Exchange the non-working connection with a working one at the Digitrax controller side. If the fault remains in the same section, your wiring is to blame - despite all your efforts... If the fault swiches to the section you exchanged the connection with, then the controller has a non-working output.

Wouter

On Thu, 31 Mar 2022 at 20:21, <frank@...> wrote:
I finally just finished installing my two HO tracks and associated buss lines and the connections to the Digitrax controller. Three of my four electrical blocks are operating fine but one of the blocks is not powering the train for the some reason. I checked all the electrical and track connections but I cannot see anything that would cause this section not to operate. Any ideas on what else I should check or any actions  i  should take to find and fix this problem?

Frank 


Re: electrical block not powering the train

Lee Phillips
 

Can anyone help me with a fig 8 layout using a 4x8 sheet of plywood.
I am using "o" 42in the curves.  Maybe I need something odd in the middle ??
Many thanks.
Lee Phillips (leenbeau@...}

On Thu, Mar 31, 2022 at 5:44 PM whmvd <vandoornw@...> wrote:
Hi Frank,

Exchange the non-working connection with a working one at the Digitrax controller side. If the fault remains in the same section, your wiring is to blame - despite all your efforts... If the fault swiches to the section you exchanged the connection with, then the controller has a non-working output.

Wouter

On Thu, 31 Mar 2022 at 20:21, <frank@...> wrote:
I finally just finished installing my two HO tracks and associated buss lines and the connections to the Digitrax controller. Three of my four electrical blocks are operating fine but one of the blocks is not powering the train for the some reason. I checked all the electrical and track connections but I cannot see anything that would cause this section not to operate. Any ideas on what else I should check or any actions  i  should take to find and fix this problem?

Frank 


Re: electrical block not powering the train

whmvd
 

Hi Frank,

Exchange the non-working connection with a working one at the Digitrax controller side. If the fault remains in the same section, your wiring is to blame - despite all your efforts... If the fault swiches to the section you exchanged the connection with, then the controller has a non-working output.

Wouter


On Thu, 31 Mar 2022 at 20:21, <frank@...> wrote:
I finally just finished installing my two HO tracks and associated buss lines and the connections to the Digitrax controller. Three of my four electrical blocks are operating fine but one of the blocks is not powering the train for the some reason. I checked all the electrical and track connections but I cannot see anything that would cause this section not to operate. Any ideas on what else I should check or any actions  i  should take to find and fix this problem?

Frank 


Re: electrical block not powering the train

Steve Haas
 

Frank writes:

 

“I finally just finished installing my two HO tracks and associated buss lines and the connections to the Digitrax controller. Three of my four electrical blocks are operating fine but one of the blocks is not powering the train for the some reason. I checked all the electrical and track connections but I cannot see anything that would cause this section not to operate. Any ideas on what else I should check or any actions I  should take to find and fix this problem?”

 

Hi Frank,

 

First, if three of your four blocks are operating fine there is nothing wrong with your command station (controller).

 

Second, a quick test . . .  if you place an engine in the middle of the block in question can you control the locomotive (Yes/No)?

 

Third, does the problem occur as you travel from a block with no problem onto the problem block (Yes/No)?

 

If the answer to #2 above is Yes, it is likely you have the phasing reversed for that block. If the answer to #2 is No and the loco just sits there, you have a problem with the connections between the DCC bus and the bus wires for that block.

 

If the answer to question #2 is yes, and the answer to #3 is Yes you definitely have a phasing problem.

 

Run those tests and get back to us.

 

Best regards,

 

Steve

Steve Haas

Snoqualmie, WA


electrical block not powering the train

frank@...
 

I finally just finished installing my two HO tracks and associated buss lines and the connections to the Digitrax controller. Three of my four electrical blocks are operating fine but one of the blocks is not powering the train for the some reason. I checked all the electrical and track connections but I cannot see anything that would cause this section not to operate. Any ideas on what else I should check or any actions  i  should take to find and fix this problem?

Frank 


Re: question on buss wire connections

Steve Haas
 

Jerry Michels inquires:

"Don, This may have been addressed before, but won't a snubber appear as a load to a current-sensing detector?"

Jerry,

It is something that needs to be considered but Is easily managed.

Mark Gurries wrote a section on the Wiring for DCC web site that discusses this and has examples:

https://www.wiringfordcc.com/track_2.htm#a52

Hope this answers your questions!

Best regards,

Steve

Steve Haas
Snoqualmie, WA


Re: question on buss wire connections

Jerry Michels
 

Don, This may have been addressed before, but won't a snubber appear as a load to a current-sensing detector? Jerry Michels

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