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Thanks for your responses, I guess I should have been a little more specific. My layout is made up of 1 mainline on a 5 x 8 table extended onto a 2 x 12 shelf (L shape). There are 3 industrial sidings on the table and 2 branches on the shelf. This layout is really meant for 1 cab, however I want to add on/off switches to the sidings and branches. This way I can store my locos at the sidings and run my routes along the mainline to the various industries choosing from no more than one of 3 locos. I guess the wiring is no different than multi cab except for using spst instead of dpdt switches. My last layout was on a 4 x 8 and had about 5 blocks. My problem was with voltage drops at the furthest point from the power source. This is why I wanted to go to a bus with feeders. I guess the 1 common bus should help, but can I run the higher type wire through the spst switch or will it "burn" it out? OR do I run a bus from the pack to the panel, use 20 - 22 at the switch and pick up with a bus again? Just looking for alternatives I guess. Maybe experimentation is on the horizon. Again thanks Joe
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