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water heater currnet

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shawn laverty
shawn laverty Posts: 42
in THE MAIN WALL
Hey does anybody know what a water heater thermocouple generates ac or dc power. I think its ac but just want to be sure.

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  • Mark Eatherton
    Mark Eatherton Posts: 5,876
    DC millivolts

    amount depends upon whether it is a generator or a thermocouple.

    ME
  • Dave_132
    Dave_132 Posts: 65
    thermocouple voltage

    Standard thermocouples when new will register about 20 mv D.C A pilot generator such as a PG9 will register around 750 mv D.C. The larger are generally referred to as powerpiles or self generating controls. Powerpiles provide enough power to open a larger valve. In older systems it was the only electricity available. They used a thermostat with gold contacts to improve conductivity and work in harmony with the valve.Polarity on these systems were critical

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