From: JMLayman@invalid.invalid   
      
   On 12/04/20 10:00, Phil Allison wrote:   
      
   >> 230:12 -> 12:230 transformation will theoretically output 230V AC   
   >> which,   
   >   
   > ** Only IF you use toriodals.   
      
   About right. Over 30 years ago I used back-to-back toroidals to get a   
   safer supply to a 230V pond pump 10 metres away in the garden.   
      
   The matching toroidals were 230:18-21-24-27-30V and rated at 3A. I used   
   the 30V output of the first, ran it through 10m of 1.5mm^2 cable, and   
   connected it the 27V secondary of the second toroidal. The pump was   
   rated at 50W, and, from what I remember, I got about 220V out from the   
   primary of the second toroidal when under load. It worked that way   
   without problem for many years.   
      
   --   
      
   Jeff   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)