From: ahk@chinet.com  
    
  Stephen Sprunk  wrote:  
  >On 09-Jul-14 14:39, hancock4@bbs.cpcn.com wrote:  
    
  >>Do underground copper cables "wear" and need eventual replacement?  
    
  >Older ones, yes; they weren't very durable.  Newer materials are  
  >virtually impervious to water and rodents, and the wires themselves  
  >don't wear out.  
    
  Oh, I wouldn't say that. The newer thermoplastics used in insulation  
  are excellent, but you never know when you'll make something attractive  
  to rodents, till you've unfortunately installed quite a lot of it  
  then discover the chewing.  
    
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