Wiring the module
NTRAK-standards require each of the three main tracks to be one single cab (electrical circuit). This means that for each of the three tracks on our module we have to have a double pole bus wire running through the module from end to end. In addition, we need a white/braun wire combination for any AC- requirements on the module, plus a multiple socket for 230V/120V mains current.
All bus wires - with the exemption of the mains cable - are to be connected to female loudspeaker plugs or female banana plugs at the left end of the module. The right end of the bus wires is connected to male plugs. The multiple sockket is best placed somewhere in the middle of the module to facilitate the connection of power packs or accessories like lamps.
As already mentioned before, I start working from the rear when adding the wires. The plus-rail is always facing the viewer. All wires should have a minimal diameter of 1.5 mm to avoid voltage drops. |  |
| In order to have a strain relief for the wires, I connect them to terminal strips mounted to the module's head boards. From there, another length of wire is connected to the banana plug or a loudspeaker plug. |  |
| Female banana plugs at the left module head. Make the wires roughly 30 cm or 1 foot long in order to avoid problems when connecting two modules. |  |
| Shown here is the right module head with the terminal strip and the connected wires with male banana plugs. |  |
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© 2009 by Erhard Baltrusch, Hamburg, Germany