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Yard Master & Research
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It's not stupid. The answer is in the running. Where does it slow down? That's where it needs it. The length willl vary on your track condition. I have 4 on a double loop in a 7 by 7 area. This is using the same transformer. If you block it, you separate your feed/power anyway. Rule of thumb, one every 4 to 8 feet. O Track is equivalent to 16 gage wire(info from CTT), That is the reason they make a 3 ft straight, less connections less resistance and less bumps!!! ;)
 

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Power Points

With regards to power points, what size wire should be used to ensure a strong signal/connection.
 

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Yard Master & Research
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10,902 Posts
I hate to leave a question unanswered.

In O scale the track being 16 gage the experts like 14 gage feeds for the permanent layouts. I'm using speaker wire. HO? I don't know, around 18 gage at least. I have to research more. I use 22 gage a lot for wiring. I don't have a reference to answer this now. Naturally, the larger wire, the safer it is.


Okay I cheated and Googled
http://www.building-your-model-railroad.com/model-railroad-wiring-2.html

The 14 gage wire is for the big ZW transformer. Other than scale size the power used does not vary that much by scale.
 
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