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I wanted to share that my original testing was successful in correctly selecting the fuse amperage (of 3 amps) for this preventive measure to protect the rear engine set power traces from burn out.
http://www.rayman4449.dynip.com/MTH...wer pickup wires to protect from short damage
In this modification I added a fuse holder and a 3 amp fuse inline in the positive and negative wires that run from the front and rear engine power pickups. 3 amps was about the max that narrow trace could take before cooking the board sealant (~4amps) and not much more than that the trace would blow. At three amps that trace is hot to the touch.
From the last train show I must have had a temp short of a front engine slider as one fuse was blown and after replacing it, I had continuity between the front and rear sets which means it protected the trace likely to blow under a short.
This is good news as it's an easy mod and can save headaches later on.
Keep it on the rails...
Raymond
http://www.rayman4449.dynip.com/MTH...wer pickup wires to protect from short damage
In this modification I added a fuse holder and a 3 amp fuse inline in the positive and negative wires that run from the front and rear engine power pickups. 3 amps was about the max that narrow trace could take before cooking the board sealant (~4amps) and not much more than that the trace would blow. At three amps that trace is hot to the touch.
From the last train show I must have had a temp short of a front engine slider as one fuse was blown and after replacing it, I had continuity between the front and rear sets which means it protected the trace likely to blow under a short.
This is good news as it's an easy mod and can save headaches later on.
Keep it on the rails...
Raymond