From: rcres@XXnewsguy.com   
      
   "The Streets"  wrote in message   
   news:IPidnX4DQZxJxs3MnZ2dnUVZ_tednZ2d@earthlink.com...   
   >I have a pool water tankless instant heater that has two elements,   
   > each fed by a 220v 40amp double breaker.   
   >   
   > When I measure the current to each element it is around 35amps.   
      
   The maximum current draw for fix equipment is not supposed to exceed 80% of   
   rating of the circuit. In your case the maximum is 32 amps per 40 amp   
   circuit and you're a good 10% over that. The excessive draw over time likely   
   has weakened the breakers. The easy fix is to replace both breakers. The   
   correct fix is to upgrade the wiring to 50 amp circuits.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)