spikey Posted July 12, 2018 Share Posted July 12, 2018 I am installing a Peco SL-E199 code 75 Electrofrog 3-way to serve three sidings and am less than confident about one aspect of the wiring. Insulated joiners will be fitted to the frog rails. It seems to me that the power to each of the two outer sidings should be wired as if they come off normal 2-way turnouts i.e. the rail attached to the frog via the insulated joiner will derive its supply from the relevant frog switching, and the "outer" rail from the relevant supply to the toe of the turnout. Am I right in thinking that each rail of the central siding, being attached by an insulated joiner, simply derives its feed from the relevant frog switching? I have visions of a potential short-circuit lurking somewhere, but maybe I just need to get over that ...? Link to post Share on other sites More sharing options...
RMweb Gold RFS Posted July 12, 2018 RMweb Gold Share Posted July 12, 2018 (edited) Are these going to be dead-end sidings? In which case you need no insulated joiners at all and all 3 sidings will be self-isolating. If you're DCC, and you want the sidings to be always live, you should fit IRJs to the 4 frog rails, but not the outer 2. Then you will need DCC droppers fitting to the 4 frog rails beyond the IRJs. Regardless of whether you are DC or DCC you need to fit polarity switches for the frogs. Again, whether DC or DCC, you should bond the 3 rails together on each side of the turnout. If you look underneath you will see Peco have already cut the webbing for you at about 14 sleepers in. This bonding ensures good electrical contact since otherwise you are reliant on blade-stock rail contact which can be unreliable. If you're DCC it's a good idea to make this bonding wire a dropper feed. Edited July 12, 2018 by RFS Link to post Share on other sites More sharing options...
spikey Posted July 13, 2018 Author Share Posted July 13, 2018 Thank you sir. They are indeed dead-ends and I'm not DCC, so I just need to sit down with a coffee and make sure I understand what I'm going to be doing ... Link to post Share on other sites More sharing options...
micklner Posted July 13, 2018 Share Posted July 13, 2018 Use a Tortoise motors very easy. Link to post Share on other sites More sharing options...
spikey Posted July 13, 2018 Author Share Posted July 13, 2018 Use a Tortoise motors very easy.I don't want to. I don't like them and they're too expensive for me anyhow 1 Link to post Share on other sites More sharing options...
spikey Posted July 13, 2018 Author Share Posted July 13, 2018 Job done, first ever three-way up and running, and I now know it's actually a doddle. At least on a DC layout ... Link to post Share on other sites More sharing options...
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