DC Electrics for a simple Inglenook style layout?

[Ighten]

I need a little help to see if I have got the principals of this correct as its been a long time. If I am using the simple approach of the electrofrog code 75 point blades directing power - is this basic diagram correct, in that I only need to isolate (green) the loop and the end section so a second loco can remove wagons from a stationary first that has reached the end of the line. And are the isolated sections simple on offs or do I have to wire them in reverse in the loop?

 

Edited January 31, 2021 by Ighten

[Dungrange]

When wiring points, these should always be fed from the toe or switchblade end of the point.  When using Electrofrog points, it is necessary to isolate the 'frog' by adding insulated rail joiners to both frog rails as per the instructions on the packaging.  The only exception to this is where you are using DC and the rail from the frog goes to a dead end siding.  In such circumstances, the insulated joiner can be omitted and the whole siding treated as though it is just an extension of the frog.

 

In the case of isolated sections, these can just be a simple Single Pole Single Throw (SPST) on-off switch.  That is, it is only necessary to switch off one of the rails to make the section dead.

 

With regards the loop, if you just make the feeds to the section you've isolated run through a Double Pole Single Throw (DPST) on-off switch, then you'll be able to isolate a locomotive in the loop / siding. 

 

The only problems that I can see with your diagram as shown, is that you will definitely have a short where your twin siding pulls away from the loop when the point is set for the sidings, unless you isolate the frog within the loop (ie there are adjacent red and blue feeds) and you also need a feed at the toe end of the point at the bottom right.  Apart from that, I think it should work.

Edited January 31, 2021 by Dungrange

[DCB]

The feed needs to be from the toe of the point but you can connect the wires anywhere along the outside rails of the point.  Soldering wires to the end of the point by the blade operating mechanism is a good way to ruin a point if your solderng is like mine. 

 

 

Edited January 31, 2021 by DavidCBroad

[Ighten]

Thanks to you both - think I have grasped the logic of it, finally