Trains.com

Subscriber & Member Login

Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!

Controller amps question

805 views
4 replies
1 rating 2 rating 3 rating 4 rating 5 rating
  • Member since
    September 2004
  • From: Dearborn Station
  • 24,281 posts
Posted by richhotrain on Thursday, March 27, 2014 11:00 AM

davidmbedard

8 amps?   If you have a derailment, and your DCC system doesnt see it immedietly, you will melt or weld and axle.   3.5 is plenty.

If you want to know what amperage you are drawing, get a RRampmeter.

David B

 

And, as a good rule of thumb, 5 amps is max.

Rich

Alton Junction

  • Member since
    February 2002
  • From: Reading, PA
  • 30,002 posts
Posted by rrinker on Thursday, March 27, 2014 6:49 AM

 If you are not coming close to loading down y9our system, adding the booster won;t do much if anything. Also I would not apply 8 amps directly to the track for HO layouts anyway, it's more than enough to melt things in the event of a derailment.

 If your wiring is adequate and organized the right way, you should have very little if any voltage drops. Where extra boosters can help is with very long bus runs, you can put additinal boosters along the line so that any given section of bus is as short as possible. IE:

===<booster>======<booster>===  is much better than <booster>============

But even =====<booster>===== is much better than <booster>============

Your bes bet for the 8 amp booster would be to get more circuit breakers and divide the layout into multiple power zones, but really I don;t see the need unless you start running more trains simultaneously. 2-3 isn;t going to come close to even 3.5 amps, let alone 8.

                     --Randy

 


Modeling the Reading Railroad in the 1950's

 

Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.

  • Member since
    December 2004
  • From: Bedford, MA, USA
  • 21,483 posts
Posted by MisterBeasley on Thursday, March 27, 2014 6:48 AM

No, you have enough power, assuming that you've got heavy enough track bus wires.  I would connect the base unit at the middle of your 24-foot layout so the maximum bus distance is only 12 feet.

If your layout is configured as an around-the-walls layout, though, in a 24x8 room, then there might be some advantage to putting the booster on the opposite side of the layout from the base unit, just because the bus wires get long.

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

  • Member since
    January 2014
  • 49 posts
Controller amps question
Posted by Eisen on Thursday, March 27, 2014 6:39 AM

I currently use an MRC Prodigy squared DCC controller and power pack to run roughly 24' X 8' layout. I believe it puts out 3.5 amps. Is there any advantage to adding an MRC 8 amp booster that I had purchased in the past? I realize after browsing this forum that 3.5 is probably more then adequate for my layout. I never have more then 2-3 locos running at the same time at this point. Just wondering if having the extra power improves decoder and loco performance in any way. I know it increases the chances of a decoder damaging short but I do use a DCC circuit breaker between the main power bus and the controller.

Subscriber & Member Login

Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!

Users Online

There are no community member online

Search the Community

ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT
Model Railroader Newsletter See all
Sign up for our FREE e-newsletter and get model railroad news in your inbox!