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

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   Message 648 of 2,547   
   Rich. to The Streets   
   Re: Pool Heater Nuisance Tripping   
   25 Mar 13 11:14:07   
   
   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.   
   >   
   > When I check the heater a couple of times a day, often one of   
   > the circuit breakers has tripped.  One trips more than the other,   
   > but both have tripped.   
   >   
   > I never see it happen, of course.  And when I reset the breaker   
   > it stays set.  But when I go back a few hours later it'll be tripped.   
   >   
   > Are there special breakers for this type of heater?  Perhaps one   
   > with a time delay?   
   >   
   > Suggestions welcome.   
   >   
   > Stephen   
   >   
   >   
      
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