Re: Controlling power (0n/Off) in Staging Yard Tracks

Max Maginness
 

More than you may want to know but the message is that the switching capacity of a simple rotary may be only 0.25 or 0.5 amps, but once closed the contacts can take several amps.  Might be a slight problem with high inrush current sound and /or lights when selecting a track.  

http://www.electro-nc.com/rotaryswitchbasics.pps

Max

 

From: w4dccqa@groups.io <w4dccqa@groups.io> On Behalf Of george hohon3
Sent: Monday, August 5, 2019 4:14 PM
To: w4dccqa@groups.io
Subject: Re: [w4dccqa] Controlling power (0n/Off) in Staging Yard Tracks

 

You can find almost any amp rating you need for a rotary switch at any good electronics parts store.  Mine have been in service for over ten years and they have been perfectly reliable in all those years.

 

George

 


From: w4dccqa@groups.io <w4dccqa@groups.io> on behalf of Don Vollrath <donevol43@...>
Sent: Monday, August 5, 2019 9:25 AM
To: w4dccqa@groups.io <w4dccqa@groups.io>
Subject: Re: [w4dccqa] Controlling power (0n/Off) in Staging Yard Tracks

 

Advisable? Yes. At least add the isolating gaps to do so. A toggle switch per track is the easy way. Most rotary switches don't have the amp rating for track power and may become unreliable. 
Necessary? Maybe. DCC locos (even ones with sound) don't really consume that much track power when idle. But lighted passenger cars can/do. Turnning power off makes the sometimes annoying sound go off and positively prevents any unwanted/mistaken locomotion.

DonV 

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