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Reply to "MTH DCC vs DCS"

the power supplies for most DCC systems are 15 volt AC. Boosters with power supplies are used on larger layouts to divide up the load (amperage) most DCC systems are 5 amp (NCE and Digitrax also have a 10 amp system)  so splitting the layout up into more than one section splits the load. The DCC signal is passed from the system to the booster's via the control buss.

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