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I have some questions on DCC (1) i have read that if you leave a engine with DCC on the track that there is power going through will it burn up the decoder or the motor, i also read where one person had block control so that this would not happen is this necessary. (2)i also read where if a DCC equiped engine could melt down if it shorts out on the frog of a switch. is this true (3) on reverse loops to you have to buy a reverse loop module so that the polarity stays correct
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