XPost: uk.tech.broadcast, uk.tech.digital-tv, uk.rec.audio   
   XPost: sci.electronics.repair   
   From: k.type@example.invalid   
      
   In article ,   
   G6JPG@soft255.demon.co.uk says...   
   >   
   > In message , Geoffrey S.   
   > Mendelson  writes:   
   > >   
   > >The UK used several systems, and a friend of mine who traveled to London   
   > >in the 1970's found that there were four different electrical systems in use   
   > >in various parts of the city. By that time they had been standardized to   
   > >240 volts 50Hz, but the older plugs and lightbulbs (different ones for   
   > >different systems) remained.   
   >   
   > Your friend sounds confused. The 240/50 was standardised a long time   
   > before 1970, and the various plugs and bulbs had been running on 240/50   
   > for some decades by then.   
   >   
      
   I remember a major upgrade taking place in West Ham to upgrade the   
   distribution network from 215V AC to the standard 240V while I was at   
   school there in the late 50s.   
      
   Nearby Ilford still had 200V DC, a hangover from when Ilford town   
   council generated 600V DC for its tramways and obviously found it   
   convenient to stick to DC for domestic supplies.   
      
   When it was converted to 240V AC I do not know but there was no evidence   
   of anything remotely DC connected when I moved there in the early 70s.   
      
   --   
      
   Terry   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)