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   alt.engineering.electrical      Electrical engineering discussion forum      2,547 messages   

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   Message 1,579 of 2,547   
   bud-- to John G   
   Re: Energy Efficiency and 5V/12V Devices   
   15 Dec 15 11:38:03   
   
   From: null@void.com   
      
   On 12/14/2015 6:47 PM, John G wrote:   
   > k28@ponce.com has brought this to us :   
   >> 208Y/120 is a very common distribution systems in the United States. The   
   >> relationship comes from Y-connected system and the square root of 3   
   >> (1.73 *   
   >> 120 = 208). The voltage between any phase and ground will be 120 and the   
   >> voltage between any two phases will be 208.   
   >   
   > Yes but the fact is very few domestic instalations in the USA have THREE   
   > phase distribution and only have 120 and 240.   
   >   
      
   Generally quite true, and I don't think the OP has 208.   
      
   An apartment complex may be powered by 208/120V wye, with 2 phases fed   
   to apartment panels. Those panels have 208V, and an electric range may   
   be powered by 208V.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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