To read more about the recommended practices for DCC wiring go here: http://www.wiringfordcc.com/track.htm
Main DCC track bus wire size recommendations:
Have Track feeders every three feet on every track for best DCC operation. Solder together sectional track if possible. Note: Rail joiners are NOT good electrical connections. They provide track alignment only.
Recommended Wire Gauges by Scale
- Note: Recommended Wire Gauges Shown in Table Are For Copper Wire Only, at 60 Hertz, AC, Sine wave. Keep that in mind when making comparisons. This chart is based on a 5A maximum current on the bus. For a 10A booster, move to the next larger gauge (smaller number). Runs up to 100 feet are possible with 12AWG wire, and 50 feet with 14AWG. This is for one leg, in theory it is possible to have a 100 foot run (14AWG) with the booster in the middle (50 feet on each side). Don't skimp on wiring, plan of future power needs.
Metric Equivalents to American Wire Gauge
American Wire Gauge (AWG) with Metric Equivalents
|AWG||Diameter (Inches)||Nearest Metric Size in square millimeters|