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[quote user="gregc"]by every other rail joiner, doesn't he mean that every piece of rail (2 rails / section) is connected to a railjoiner with a feeder? [/quote] I think he means (based on how he worded it) every piece of rail gets a wire soldered to it, because Railjoiners do not provide long term, reliable electrical contact. [quote user="gregc"]  but then he said (what you referred to) a feeder every 9'   (is he assuming a solder joint may break)?[/quote] Yes, he is assuming that the possibility exists that a soldered rail joiner or feeder joint may break at some point (inadequate solder applied, stress due to external forces). I have not actually had this happen except at a joint between code 100/83. [quote user="gregc"]the voltage drop is 0.14V at 1A.   Even if this were tripled, would it be excessive?[/quote] <a href="https://sites.google.com/site/markgurries/home/dcc-general-best-practices/wiring-planing/max-track-bus-lenght">https://sites.google.com/site/markgurries/home/dcc-general-best-practices/wiring-planing/max-track-bus-lenght</a>
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