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What I want is for both the track on the drop-gate itself and the leads in either direction to be controlled by the position of the drop-gate. (i.e. when the gate is down, the leads have no power.) To

Swanny, it sounds like all you've done is depowered the track on the bridge - but I hope that's just a misreading.? What should be done is removing power from the approaches to the bridge, which can

I suspect over-currenting the alarm switch will only result in it's premature failure, not a fire or other calamity.? In a protective situation like this, switch failure is fail-safe.? Still, it

Steve Interspersed comments below. Regards Blair Believe me, I wish it were so.? Read on. Yes, as far as trains on this portion of the layout. Almost all, the area around the crossover will go in

"In the photos area, under my name, as we now can't load JPG files to the files area." Blair, I've downloaded and reviewed your JPG. In my opinion you're making this more complex than it needs to be.

John, That reed switch is rated for only 300 mA @ 30 V. If you have multiple locos, sound loco, etc or a short circuit you might have problems especially if it ever switches while under load? Robin

Robin, I have a "lift" gate that I protect with magnetic reed switches, such as used in alarm systems.? You can easily find them by searching for the item below on Amazon.? I use one on each end,

Nope, you've completely missed it, Jim.? I want to reverse the entire staging area and it's approach tracks, including the passing sidings.? All as a unit.? Based on the position of one set of

Blair, Your track plan is very "complex" and your "reversing sections" are (if I understand how you intend them to work) -very- short (as in just the cross-over area?).? That seems, to me, to be a

The easy way for signaling is to make the turnout and points part of the mainline signal block leading up to it. Both of the tracks leading away from the frog should be isolated and start the next

Voltage depends on your scale, i I believe it can be up to 27 Volts or so for larger scales per the DCC specs. Current depends on the command station or circuit breaker that is feeding your switch and

Blair there is a great new book out about signaling. Guide to signals and interlocking by Dave abeles. It pretty much tell you everything you need to know. Kalmbach publishing issued the book.

Wouter Thanks.? A PSX-AR is capable of reversing all of an 8A booster, so I think I'm safe even if I went that route.? Agreed, other AR units don't have the same specs.? I think reversing the feed

Blair, In all your deliberations, do not forget that all autoreversers also have their own maximum sustainable track current. Wouter

I'd go for something with a 5A rating, Dave; "overkill" is better than "marginal".? Voltage is only about 15V, so pretty much anything will do that way.? I presume what you're doing is removing the

I want to use microswitches on a drop-gate to power track (when the gate is up). There’s lots of different kinds and power (voltage/current) specifications. What’s the recommended min rating for a

The following photos have been uploaded to the Blair's files ( /g/w4dccqa/album?id=267210 ) album of the [email protected] group. * Loop Schematic e.jpg (

In the photos area, under my name, as we now can't load JPG files to the files area. Blair

oops.? I forgot, this list strips attachments. See Sketch "loop schematic e.jpg" in the files.? It'll be there momentarily. Blair

Attached is a rudimentary sketch to illustrate my staging yard. (remember, there are two such, very similar). You can see, I hope , how it makes sense to me to simply reverse the entire B/C loop