In message <960106000513_100421.2123_BHG30-1@CompuServe.COM>, Graham
Singleton <100421.2123@compuserve.com> writes
>
>Silicone cable isn't really suitable,it's not very resistant to abrasion, being
>designed for uses where multiple flexing occurs.
There are variants of silicone insulated cables which employ a glass
fibre external braiding to overcome the abrasion problem which will
stand 150 degC continous and 180 degC short term. A 24/0.2m
2 tinned
copper 6A rated cable of this type weighs around 15 gramms/meter and is
available as RS part number 381-731 (RS Components GMBH at Hessenning,
13b Morfelden-Walldorf, Postfach 13 65 Germany. Tel: 61 05 401 234. Cost
about DM28 per 25M.
>Never use PVC. If a temporaray overload occurs it will melt slightly and the
>conductor will start to migrate towards the side of the insulation. After
>several such events it may well break through and cause a short.
Totally agree, it wouldn't be death from burning but asphyxiation.
>Nyvin (nylon/pvc) is OK because it's glass reinforced, but when it gets very
>hot
>it gives off toxic and corosive vapours.
Horribly expensive as well!
Consider also PTFE insulated which has a higher temperature range (-55C
to +200C) and very good abrasion resistance. RS supply a 7/0.2 (24AwG)
silver plated copper 6amp rated in seven different colours at around
DM18 per 25m which weighs 4gm/metre therefore significantly lighter than
either glass wrapped silicon or even Myvin.
If you can get hold off it anything to Def-Stan 61-12 Part 18 is the
best, circa DM20 per 25m and 7.5g/metre for 13A rated 19/0.2 1.4mm
diameter.
Trouble is I have only ever seen it sold in 300m reels.
--
Graham E Laucht
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