From: jishnu@nospam.verizon.net   
      
   On 2/10/2016 9:24 PM, Stephen Sprunk wrote:   
   > On 09-Feb-16 10:49, Jishnu Mukerji wrote:   
   >> On 1/15/2016 2:26 PM, Stephen Sprunk wrote:   
   >>> Amtrak (and its predecessors) have been doing up to 135mph on 11kV   
      
   >> Amtrak is neither changing the voltage nor the frequency on NEC   
   >> south. They are adding 25Hz capacity. They don't foresee any problem   
   >> with operating at 160mph using 12.5kV 25Hz.   
   >   
   > 12.5kV means four times as much current as 2x25kV, but if they think   
   > their decrepit infrastructure can handle the load, c'est la vie.   
      
   Whether we like it or not, the infrasrtucture is being   
   upgraded/replaced/enhanced to handle the higher current. It will do just   
   fine.   
      
   > Variable-tension and 25Hz are far more pressing problems that can be   
   > corrected independently, though it'd be wise to do both in a way that   
   > makes moving to 2x25kV later much easier.   
      
   This is not happening anytime soon, if ever.   
      
   >> Also BTW, Amtrak's conversion to position light does not remove the   
   >> middle lamp. Effectively just replaces the lamps with color LED.   
   >   
   > Unless it can change colors, the middle lamp can only be used with one   
   > CPL aspect, so you might as well remove it and save the cost.   
      
   You're right. I was confused.   
      
   /J   
      
   --- SoupGate/W32 v1.03   
    * Origin: LiveWire BBS -=*=- UseNet FTN Gateway (1:2320/1)