Gentlemen - a lot of interesting replies, thankyou for taking the time.
nigelcliffe wrote:You could reduce the wiring complexity by using "common return".
My limited knowledge of electrics would not have led me to think of that, but I can see the sense in having a common return as it would simplify the wiring, especially on something more complex. I have been thinking of wiring for some time and have collected together the switches, connectors and wires that I need. To use the full DPDT switch is not much extra work on this size of layout. At the moment I have a clear picture in my mind of how it will (should!) look so I think I will stick with that for now. Next time ...
Will L wrote:I thoroughly approve of getting it all planned before you start wiring, because it tends to illustrate all the bits that you haven't yet considered or at least not documented. Such as the location of the switched feeds on the points.
Will - I would agree. Numbering the tags seems an excellent idea whether the wire is colour-coded or not. I don’t have tags as such, but do have copper strip board which I was going to cut and superglue under the baseboard and use in the same way a tag would be.
I agree with you Will that there should be up-to-date documentation to go with the wiring, and as Terry and David said, it is consistency in using colour coding that is important.
Yes, my drawing did not show the switched feeds. It does now! And they were there on the layout!
I will stick with colour-coded wire on this layout, partly because it is a small layout, and I already have the wire, but principally because it will be more obvious to me what is what when I look underneath. As a beginner, that will help but experience may well change what I do.
I'm no electrics/electronics expert but during the initial trials on MB I used a 9v battery to power 3 tortoise motors. The battery became extremely hot!!!!...
When I had the layout on the camping mat, I did test the point motor with a battery holding the wires against the terminals and it did not get hot. But that was only one turnout - 3 might be different. Nigel suggested using diodes to reduce the auxiliary voltage from my transformer, and if need be I will take this route. The instructions with the Tortoise have a wiring diagram to do this.
davidb wrote:use a consistent approach so that lines are easily traceable.
I have heard it suggested several times that it is useful to mark where the track is the underside of the baseboard. Painting the underside a light colour first helps as well.
Yes, David/Terry - consistency is essential. And I like the idea of marking the track on the underside.
Will L wrote:further unnecessary ware and tear on many, already folliclely challenged, heads.
So Will, how did you know I am folically challenged? When I look in the mirror I see a full head of hair (well, almost) but when someone takes a photo, it is then that I see the monkey’s arse:
I no longer have any protection when under the baseboards! Maybe this photo should be my avatar!