From: jjhudak@gmail.com   
      
   On Saturday, October 22, 2022 at 2:34:59 PM UTC-4, Cursitor Doom wrote:   
   > On Sat, 22 Oct 2022 08:08:25 -0700 (PDT), "Peter W."    
   >  wrote:    
   >    
   > >Did the caps fail Open or Short?    
   > >    
   > >Peter Wieck    
   > >Melrose Park, P   
   > These are X2 caps and supposed to fail short. However, for whatever    
   > reason, they both failed open.   
      
   Fail short...really? Why would you want a cap that is across the supply line   
   to fail short? Just to make sure the fuse blows?   
   It is my understanding that X and Y capacitors experience line spikes, and    
   will endure multiple small breakdowns over the years as a result of this   
   stress. They fail open because local heating caused by a microscopic   
   dielectric breakdown results in    
   polypropylene melting, which seals off the "edge" of the breakdown.   
   Is this not correct??   
      
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