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RE: My first considerations.....

75.136.199.68

LineArrayNut

In Reply to: RE: My first considerations..... posted by doodlebug on March 26, 2008 at 03:59:06

His post listed plenum Cat5 for consideration. Most plenum rated is based on teflon insulation (ie. Belden 1585a) or at least a fluorine bearing polymer derivative. This is good for 300VRMS. I've used it as CVH 27 pair speaker cable at 450W rms with no issues. Anecdotal reports up to 500v, but I would not. Works great for signal though. No issues with heat would be expected with plenum rated.
I *like* the loudness button!

Follow Ups:

RE: My first considerations..... - Cyril R 16:02:55 03/27/08 (5)
I too have made the CVH recipe speaker cables....and this is the wire left over from that project...and therefore i want to try put it to some good use.

I too thought that it (the plenum rated cable) was made to withstand fires etc....but i do see (in the Heathkit AA-121 schematic) that the voltages go up to around 450V or more. So that makes me wonder whether I'd still be okay or not.

Later,

C
- RE: My first considerations..... - LineArrayNut 19:41:01 03/27/08 (3)
  I'd get some wire from navships on fleapay:
  
  http://stores.ebay.com/Johns-Silver-Teflon-Wire-Shop
  
  for that voltage/purpose. No affiliation besides a very satisfied repeat customer.
  I *like* the loudness button!
  - mil-spec wire (Open in New Window)
  - RE: My first considerations..... - Cyril R 08:41:44 03/28/08 (2)
    Thanks for the pic/links. Two things though :
    
    1. The picture that you attached above....which item was it in the eBay listing link that you also included ?
    
    2. Also, I don't see anywhere (on the eBay listing) mention of the fact that they can withstand voltages or 500V+.
    - RE: My first considerations..... - LineArrayNut 12:38:53 03/28/08 (1)
      Because he's a respected seller, his wire goes quick, it was available last night.
      
      http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=300200112442&ssPageName=STRK:MEWN:IT&ih=020
      
      try here: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=230234053277&ssPageName=MERCOSI_VI_ROSI_PR4_PCN_BIX_Stores&refitem=380010990209&itemcount=4&refwidgetloc=closed_view_item&refwidgettype=osi_widget&_trksid=p284.m185&_trkparms=algo%3DSI%26its%3DI%252BIA%26itu%3DIA%252BUCI%26otn%3D4%26ps%3D42#ebayphotohosting
      I *like* the loudness button!
      old auction on that site (Open in New Window)
      - Thanks for the new link....will try that out (EOM) - Cyril R 07:19:21 03/29/08 (0)
        
        In Reply to: RE: My first considerations..... posted by LineArrayNut on March 28, 2008 at 12:38:53
        
        .
- RE: My first considerations..... - doodlebug 19:27:51 03/27/08 (0)
  IIRC, plenum CAT5 does not give off toxic gasses when heated to typical building fire temperatures.
  
  This is not the same consideration as insulation that's rated to withstand high voltages on the order found in older tube gear.
  
  Cheers,
  
  David

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