Date   
Re: Common Metric Wire Sizes

Flash Gordon
 

Allan,

Let us know when you have the new page up.

Ed S

Re: Common Metric Wire Sizes

colinseggie@...
 

Hi Allan.
Don't forget an addendum page of stores selling 3 decimal place vernier calipers!   ~:>)  No offence ment Les, just playing Trains!
Doc Colin

Re: Common Metric Wire Sizes

jazzmanlj
 

Hey Doc,

FYI, my digital calipers at work and cheapies at home read 4 decimals!

Len Jaskiewicz

Hi Allan.
Don't forget an addendum page of stores selling 3 decimal place vernier calipers! ~:>) No offence ment Les, just playing Trains!
Doc Colin

Re: Common Metric Wire Sizes

colinseggie@...
 

You are absolutely right Len. I forgot about my science days and the 3 decimal places rule, but just pulling your leg and adding some humor :>)
Doc Colin

Route wiring a ladder using a Tortoise

claysmith44@...
 

I have seen, but have not been able to locate where, a diagram for DCC route wiring a staging yard ladder using the contacts on a Tortoise so that only the track selected has power. If anyone can direct me to where I might find that diagram again I would appreciate it. 

Thank you.

Clay Smith

Hopkinsville KY

Re: Route wiring a ladder using a Tortoise

Paul O
 

Clay,

The original article was in Model Railroader, May 2009 issue, page 55, “Easy Yard Ladder Control”.

If you don’t have that issue, contact me off-line.



I remember something about his sample track drawing in the article not being correct but I can’t remember what it was without reviewing the article. I believe it had to do with the way he drew the turnouts.



Paul O

pomilian at sbcglobal dot net





From: WiringForDCC@... [mailto:WiringForDCC@...] On Behalf Of claysmith44@...
Sent: Thursday, April 17, 2014 5:45 PM
To: WiringForDCC@...
Subject: [WiringForDCC] Route wiring a ladder using a Tortoise





I have seen, but have not been able to locate where, a diagram for DCC route wiring a staging yard ladder using the contacts on a Tortoise so that only the track selected has power. If anyone can direct me to where I might find that diagram again I would appreciate it.

Thank you.

Clay Smith

Hopkinsville KY





[Non-text portions of this message have been removed]

Re: Route wiring a ladder using a Tortoise

Paul O
 

Sorry Clay, that article was about manual turnout control of yard tracks.

I misread your post. You are looking for power-routing.

 

Paul O

 

From: WiringForDCC@... [mailto:WiringForDCC@...] On Behalf Of Paul O
Sent: Friday, April 18, 2014 12:24 AM
To: WiringForDCC@...
Subject: RE: [WiringForDCC] Route wiring a ladder using a Tortoise

 

 

Clay,

The original article was in Model Railroader, May 2009 issue, page 55, “Easy Yard Ladder Control”.

If you don’t have that issue, contact me off-line.

I remember something about his sample track drawing in the article not being correct but I can’t remember what it was without reviewing the article. I believe it had to do with the way he drew the turnouts.

Paul O

pomilian at sbcglobal dot net

From: WiringForDCC@... [mailto:WiringForDCC@...] On Behalf Of claysmith44@...
Sent: Thursday, April 17, 2014 5:45 PM
To: WiringForDCC@...
Subject: [WiringForDCC] Route wiring a ladder using a Tortoise

I have seen, but have not been able to locate where, a diagram for DCC route wiring a staging yard ladder using the contacts on a Tortoise so that only the track selected has power. If anyone can direct me to where I might find that diagram again I would appreciate it.

Thank you.

Clay Smith

Hopkinsville KY

[Non-text portions of this message have been removed]

Re: Route wiring a ladder using a Tortoise

Steve Haas
 

<<The original article was in Model Railroader, May 2009 issue, page 55,
"Easy Yard Ladder Control".>>



The article in question deals with a way to route power to the necessary
turnouts for easy route selection. It has nothing to do with controlling
track power on the various tracks in the yard.

What the original poster is looking for is a means to cut track power to all
but the currently selected track. Any magazine or book article that
discusses power routing will provide the answer.

In short, the tortoise at the beginning of the ladder will provide the
correct power to the frog of the first turnout, just like you wire any other
"hot" or "live" frog. The same switched power then goes down the ladder
where it becomes one of the inputs to the power routing at the next frog.
This continues on down the ladder until you run out of turnouts.

That's the basics, and it's a bit over simplified, but with a pad of paper,
a pencil and a round or two of your favorite beverage you should be able to
work out the details. If not, ping me and I'll help you work it out.


Best regards,

Steve


Steve Haas
Snoqualmie, WA

Re: Route wiring a ladder using a Tortoise

Pat Lawless
 

Hi, not sure if this is what you mean or not, but here are some assorted circuits that deal with such issues:
Index:

One particular circuit that sounds like it might be the right one.


Cheers,

Pat Lawless

Re: Common Metric Wire Sizes

wirefordcc
 

This is for modelers needing metric wire sizes.  I have revamped the charts for metric wires.

 For feeders, go to:  http://www.wiringfordcc.com/track_2.htm#a14

For bus wires, go to::  http://www.wiringfordcc.com/track_2.htm#a26

if you want a detailed chart of US and metric wires for general use, go to:  http://www.wiringfordcc.com/wire_sizes.pdf


This is for those that have been involved with the recent discussions of metric wire.  After our discussions earlier in the week, I continued to surf the web and think about how to present information on US and metric wire that was simple.  I didn't want the typical non-US modeler to have buy a wire gauge or a caliper to measure wire. I wanted something just as simple for the non-US modeler as it is for the US modeler.  The complicating factor is that there is not a one-for-one metric equivalent to US wire sizes.  It took me a week, but I think I achieved my goal.  The end result is that it is so subtle, the casual reader won't notice I made a change.  Any new modeler visiting my site won't know notice there was ever a problem and will know which wire they need to buy.


Enjoy!


Allan Gartner

Wiring For DCC

Re: Common Metric Wire Sizes

Doc Colin <colinseggie@...>
 


 Hi Allan,
 Very good and succinct. No short term headaches/expense there!
Well done!
 Doc Colin

----- Original Message -----
From: bigboy@...
Sent: Saturday, April 19, 2014 9:07 PM
Subject: Re: [WiringForDCC] Re: Common Metric Wire Sizes

 

This is for modelers needing metric wire sizes.  I have revamped the charts for metric wires.

 For feeders, go to:  http://www.wiringfordcc.com/track_2.htm#a14

For bus wires, go to::  http://www.wiringfordcc.com/track_2.htm#a26

if you want a detailed chart of US and metric wires for general use, go to:  http://www.wiringfordcc.com/wire_sizes.pdf


This is for those that have been involved with the recent discussions of metric wire.  After our discussions earlier in the week, I continued to surf the web and think about how to present information on US and metric wire that was simple.  I didn't want the typical non-US modeler to have buy a wire gauge or a caliper to measure wire. I wanted something just as simple for the non-US modeler as it is for the US modeler.  The complicating factor is that there is not a one-for-one metric equivalent to US wire sizes.  It took me a week, but I think I achieved my goal.  The end result is that it is so subtle, the casual reader won't notice I made a change.  Any new modeler visiting my site won't know notice there was ever a problem and will know which wire they need to buy.


Enjoy!


Allan Gartner

Wiring For DCC

Re: Common Metric Wire Sizes

Vollrath, Don <dvollrath@...>
 

The table additions are great. Although the big one is a little over the top even for the rivet counters.

DonV

On Apr 19, 2014, at 2:08 PM, "bigboy@...<mailto:bigboy@...>" <bigboy@...<mailto:bigboy@...>> wrote:




This is for modelers needing metric wire sizes. I have revamped the charts for metric wires.

For feeders, go to: http://www.wiringfordcc.com/track_2.htm#a14

For bus wires, go to:: http://www.wiringfordcc.com/track_2.htm#a26

if you want a detailed chart of US and metric wires for general use, go to: http://www.wiringfordcc.com/wire_sizes.pdf


This is for those that have been involved with the recent discussions of metric wire. After our discussions earlier in the week, I continued to surf the web and think about how to present information on US and metric wire that was simple. I didn't want the typical non-US modeler to have buy a wire gauge or a caliper to measure wire. I wanted something just as simple for the non-US modeler as it is for the US modeler. The complicating factor is that there is not a one-for-one metric equivalent to US wire sizes. It took me a week, but I think I achieved my goal. The end result is that it is so subtle, the casual reader won't notice I made a change. Any new modeler visiting my site won't know notice there was ever a problem and will know which wire they need to buy.


Enjoy!


Allan Gartner

Wiring For DCC

Re: Common Metric Wire Sizes

jazzmanlj
 

Hi Allan,

Just a comment about your comparison of solid vs. stranded wire; skin effect and AC resistance.

In general for frequencies under 100kHz, skin effect should be negated as it's so miniscule. Stranded wire does not really reduce scin effect as the conductors are uninsulated, so the model is that of a solid conductor. Litz wire does reduce skin effect as it's multiple strands of insulated magnet wire twisted. The size of the strands are optimized for frequency ranges, generally starting near 1MHz and above.

AC resistance is another subject that does get quite technical. It comes into play in 'high power' high frequency systems.  Under 100kHz it should not even be mentioned to the general modeler.

Regards,

Len Jaskiewicz

Proximity of Sub Bus Wires to Main Bus Wires

redking56@...
 

I am in the process of dividing my layout into a series of separate power districts, and I will be stringing a pair of sub bus wires for each separate power district.


Is there any concern about installing pairs of sub bus wires in close proximity to one another or in close proximity to the main bus wires?


Thanks.


Rich

Re: Proximity of Sub Bus Wires to Main Bus Wires

Vollrath, Don <dvollrath@...>
 

Rich, There will be no interference caused by running the separate busses alongside each other. But a better plan might be to run the main booster bus out on the layout and put the local district circuit breakers near the center of the individual districts.

DonV

 

From: WiringForDCC@... [mailto:WiringForDCC@...] On Behalf Of redking56@...
Sent: Tuesday, April 22, 2014 6:23 AM
To: WiringForDCC@...
Subject: [WiringForDCC] Proximity of Sub Bus Wires to Main Bus Wires

 




I am in the process of dividing my layout into a series of separate power districts, and I will be stringing a pair of sub bus wires for each separate power district.

 

Is there any concern about installing pairs of sub bus wires in close proximity to one another or in close proximity to the main bus wires?

 

Thanks.

 

Rich




Re: Proximity of Sub Bus Wires to Main Bus Wires

redking56@...
 

Don, 

Thanks for that information.   

What exactly is the advantage of keeping the local district circuit breakers near the center of the individual districts as opposed to grouping the circuit breakers near the booster and running pairs of sub bus wires out to the local power districts?

Rich


---In WiringForDCC@..., <dvollrath@...> wrote :

Rich, There will be no interference caused by running the separate busses alongside each other. But a better plan might be to run the main booster bus out on the layout and put the local district circuit breakers near the center of the individual districts.

DonV

 

From: WiringForDCC@... [mailto:WiringForDCC@...] On Behalf Of redking56@...
Sent: Tuesday, April 22, 2014 6:23 AM
To: WiringForDCC@...
Subject: [WiringForDCC] Proximity of Sub Bus Wires to Main Bus Wires

 




I am in the process of dividing my layout into a series of separate power districts, and I will be stringing a pair of sub bus wires for each separate power district.

 

Is there any concern about installing pairs of sub bus wires in close proximity to one another or in close proximity to the main bus wires?

 

Thanks.

 

Rich




Re: Proximity of Sub Bus Wires to Main Bus Wires

Vollrath, Don <dvollrath@...>
 

The only advantages are to reduce the size of the wiring bundle, the total number of wiring feet under the layout and shorten the distance from the breakers to actual track connections. May not apply in every situation.

DonV

 

From: WiringForDCC@... [mailto:WiringForDCC@...] On Behalf Of redking56@...
Sent: Tuesday, April 22, 2014 7:51 AM
To: WiringForDCC@...
Subject: RE: [WiringForDCC] Proximity of Sub Bus Wires to Main Bus Wires

 



Don, 

 

Thanks for that information.   

 

What exactly is the advantage of keeping the local district circuit breakers near the center of the individual districts as opposed to grouping the circuit breakers near the booster and running pairs of sub bus wires out to the local power districts?

 

Rich



---In WiringForDCC@..., <dvollrath@...> wrote :

Rich, There will be no interference caused by running the separate busses alongside each other. But a better plan might be to run the main booster bus out on the layout and put the local district circuit breakers near the center of the individual districts.

DonV

 

From: WiringForDCC@... [mailto:WiringForDCC@...] On Behalf Of redking56@...
Sent: Tuesday, April 22, 2014 6:23 AM
To: WiringForDCC@...
Subject: [WiringForDCC] Proximity of Sub Bus Wires to Main Bus Wires

 



I am in the process of dividing my layout into a series of separate power districts, and I will be stringing a pair of sub bus wires for each separate power district.

 

Is there any concern about installing pairs of sub bus wires in close proximity to one another or in close proximity to the main bus wires?

 

Thanks.

 

Rich






RC snubbing in a DCCOD occupation block

Tim Johnson
 

I was installing some RC snubbers on the remaining track buses yesterday, and by chance installed one on a bus that feeds power to an occupancy detection block that is monitored by one of Bruce Chubb's DCCOD circuits. As soon as I powered on to test that everything was still working properly, I noticed that the DCCOD LED connected to its output was lit even though no train was in the block. I knew this would happen but wasn't thinking when I installed that snubber. When I removed the snubber, the LED went off as expected.

The track bus that feeds this occupancy block is a branch from the a main track bus connected about 10 feet from the open end of that main bus. The main bus at the open end is terminated with its own snubber. My question is whether that snubber should be sufficient for even the branch bus that feeds this occupancy block. I don't have access to an oscilloscope, so I can't verify the DCC waveform on that branch bus.

For reference, info on the DCCOD can be found here: http://www.jlcenterprises.net/Files/DCCOD%20Information.pdf


Thanks,


-- 
Tim
Timothy A Johnson, Tucson, AZ (www.sbb-bls-bahnen.com)
European Train Enthusiasts, Central Arizona Chapter (www.ete.org)

Re: RC snubbing in a DCCOD occupation block

jazzmanlj
 

Tim,

You could try cutting the snubber cap to .047uF. Another approach would be using tranzorbs as they only conduct during voltage spikes. The further away a transient protective network/device is from the transient occurence, the less effective it is.

 

Len Jaskiewicz

Throttle Pockets for Digitrax UT4 Throttles

Carl
 

Hi Gang:

Just finished a run of Throttle Pockets for Digitrax UT-4:

https://groups.yahoo.com/neo/groups/WiringForDCC/photos/albums/1229122851

I don't think I'll ever need to make more if someone wants the tooling?

Carl.