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Accessory Voltage Question

Daniel models in O scale and asks:

In hooking up power to accessories, I was advised to setup four power lines, plus a ground. Make the lines 8,10,12 & 14. Then apply to them per each accessory. Problem is anything I reference gives a wide variance, like 9-14 , 10-12, etc. pretty confusing. Any advice is appreciated.”

One Response to Accessory Voltage Question

  • Dale Arendssays:

    If something says it needs a voltage of 9-14, 10-12, etc. it refers to the minimum and maximum voltages for the item to work. Most power supplies are not very precise; a 12 volt supply may be off by as much as a volt in either direction. So, if your accessories are all in the 9 to 14 volt range, a decent 12 volt supply should be fine – as long as it has the amperage to run the number of accessories you have. If you have some 9 volt accessories and some 12 volt accessories, you will probably need separate power lines and supplies for them.

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