Second hand layouts.

Started by Jack, August 29, 2014, 04:12:43 PM

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Sprintex

Quote from: Jack on August 31, 2014, 01:55:49 PM
I've noticed on one or two layouts that I've looked at they have used a good deal of multicore single strand communication wire, the type BT might use. My understanding is that this type of wiring isn't suitable for DCC, and maybe suspect for point motors, am I right in my understanding? If not can someone re educate me please.

It's not that telephone wire is unsuitable for DCC (or DC for that matter) in a purely electrical sense, it's more to do with the fact it breaks easily with little movement, causing much fault-finding when something suddenly doesn't work ;)


Paul

PLD

Quote from: Jack on August 31, 2014, 01:55:49 PM
At what point or age of a second hand exhibition layout would I need to consider a complete rewire?
If it was wired properly, with suitable materials and components in the first place then never...


edwin_m

Quote from: Sprintex on August 31, 2014, 07:09:19 PM

It's not that telephone wire is unsuitable for DCC (or DC for that matter) in a purely electrical sense, it's more to do with the fact it breaks easily with little movement, causing much fault-finding when something suddenly doesn't work ;)

Telephone wire is a prime candidate for causing the resistance and voltage drop problems I mentioned in my previous post.  And all single-strand wires are only really for use in static installations - be cautious if any are being used as trailing cables or otherwise not firmly fixed down.  There's a reason "flex" is always composed of many small strands. 

Newportnobby

Quote from: Jack on August 31, 2014, 07:04:28 PM

Is there an age factor with the wiring when it may need to be replaced on a second hand exhibition layout?

I think, speaking personally, that should read "Is there an age factor with the layout when the owner may need replacing?" :-[

Sprintex


Jack

Quote from: newportnobby on August 31, 2014, 09:37:45 PM
Quote from: Jack on August 31, 2014, 07:04:28 PM

Is there an age factor with the wiring when it may need to be replaced on a second hand exhibition layout?

I think, speaking personally, that should read "Is there an age factor with the layout when the owner may need replacing?" :-[

My good lady sometimes wishes I could be replaced!  :-[
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