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Sounds to me like he is talking about the JRMI interface wire!
On 11/22/2018 9:34 PM, Mark Gurries
Not sure what you mean by interface wire.
There are 3 classes or wires found in a layout.
1) Low Voltage Control/Communication Cables
2) Low voltage DCC Track or DC/AC cables that
distribute layout power.
3) High Voltage 120V/220V AC power cables.
In general it is bad to mix Class 1 with Class 2.
There is no hazardous power involved. The only problem with
mixing them is noise and communication problems.
You can bundle Class 1 cables in a loose group of
its own and you can bundle Class 2 cable in a loose group of its
You cannot bundle a Class 3 cable with Class 2 or a
Class 3. When it comes to high voltage AC outlet power, I would
not wrap it that cable with anything else. The AC cable is a
hazardous cable and should be protected from accidental contact
with tools or anything else that one might use in wiring up a
layout. It should be run all by itself away from all other
cables and given some mechanical protection thoughts as to its
Question. If I wind the interface
wire around a 110 extension cord will the dcc signal be
affected by the 110 current?