I'm still suggesting a 1157 instead of 1156. I think the extra voltage helps keep it cooler? i.e. If the short is simple, like a metal wheel flange catching a frog wrong, the 1157 don't seem to get as hot. Assuming you grab the car quickly. Obviously, if you let it sit and heat up, that bulb will get very hot. But I've found that if I catch the short quickly, the bulb just gets warm, not overly hot. And far less dangerous. After all, that's the complaint against the 1156. That it can get too hot too fast if you don't remedy the short quick enough.
And as has been mentioned many times. This is only if you don't need a real circuit breaker, or can't afford one.
Morgan Bilbo, DCC since 8/18. Model PRR 1952.

Hi,
? I have all track protected by PSX breakers.? And also have run a Cat5 pair from them to a central
display (labelled) with LEDs that show which district(s) are shorted.? I personally don't like the
buzzers (irritating) so my LEDs are soldered to those outputs on the PSX boards and, with the
appropriate resistor are powered directly from those outputs.
? This method works quite well.? If you have a situation where you want to have more than one
LED light up to indicate a short (such as when you need to be able to see it from multiple
locations) you can easily add more LEDs.
? You can also not use a central display and instead locate the LEDs 'near where the short is
located' ... depending upon your needs - and also upon how your layout is configured.

? I find the above methods equal/better than the 1156 bulb type of short protection - but that is
my preference and YMMV.
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? - Jim in the PNW

P.S. Just noticed that this thread is about the PowerCab.? I have a PowerPro system.? Most of
? ? ? ?the above is different because using a PSX with a PowerCab is difficult due to its low
? ? ? ?power rating (amps).? Yes, I would use the 1156 with a PowerCab.? I have a PowerCab
? ? ? ?and use it for my programming track.? It is also capable of being used as a wireless
? ? ? ?ProCab (wireless board installed) for a PowerPro system.

John,

I am currently using an enhanced DCC overcurrent protection solution using a #2057 taillight lamp and a 0.9A 'PTC Fuse'. This combination works to limit DCC short circuit current to a lower value than using the 1156/1157 lamp by itself.

Reference and instructions:?

The component cost is still far less than electronic circuit breakers.

I mentioned my using 1157, not 1156. That makes a difference.
Morgan Bilbo, DCC since 8/18. Model PRR 1952.

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Thank you so much guys, that gives me hope..

Take a look at your switches. They direct power in different ways. You may need to add insulated joiners on the diverging end.

When wiring, I often do one rail at a time. I'll drop all the back rail feeders to the bus then do all the front rail feeders.

Puckdropper

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Sounds like you’re crossing bus lines and creating the short through the wiring itself.

Good day everyone, I have a question. I have an N-scale layout. I am using Peco code 80 flex track with Peco Insu-frog switches. I started running feeder wires the other day and I found that is If install more than one feeder my MRC system shorts out. Sometimes it occurs when I through a switch and sometimes the system shorts out the system with more than one feeder. Any ideas out there?

thank you,
Mike Ballou
mjbuffy@...

That's right, Rob.

Allan

Hi - I’m doing block detection for the first time and I’m gapping one rail per the BDL168 instructions. If a turnout will be its own block, then I’m assuming it needs a total of 3 gaps? One gap leading into the turnout on the throat side, one gap exiting the turnout on the main and one gap exiting on the diverging. Is that correct?

Thanks,
Rob

I meant to also say, check my assumption with an ohm meter to be sure I am right.

Allan

Interesting product.? I could have used a couple of them!

Other than mechanically linking a couple of turnouts, I suspect that Walthers probably insulated the two turnouts from each other.? This would give the modeler maximum flexibility to wire them however they needed to, to suit their particular railroad.? If this is the case, just wire them up as you would if you had used two turnouts with insulated joiners connecting the diverging routes.

Allan

Does your track scheme call for the “straight through “ paths to have the same polarity? ie- no isolating gaps on the crossover path. Simply isolate the entire crossover section (8 rail gaps) and power the whole section through a track current detector.

If your polarity scheme requires isolating gaps between the straight through paths, you probably need to cut rails to provide them. Then provide two track current detectors for occupancy signaling

DonV

I noticed Walthers is making single crossovers. What does one need to do to wire these for block detection and signaling?

V. Henry

William Waithe <wwsd40@...> added the album Malport, CN Weston Sub : AR Reversing section. the green area is the reversing sector.