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  • Burned thermostats

    What could have caused this?
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  • #2
    Re: Burned thermostats

    All that I have ever seen in that condition were water leaks. Almost all were CPVC pipe installed by a DIY

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    • #3
      Re: Burned thermostats

      Originally posted by Mr Slate View Post
      All that I have ever seen in that condition were water leaks. Almost all were CPVC pipe installed by a DIY
      Nope thats not it.

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      • #4
        Re: Burned thermostats

        I Failed to note that I had never seen both burnt all to Heck at same time. Oh well why ruin a perfect day and be right about something.

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        • #5
          Re: Burned thermostats

          was there an electrical short somewhere

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          • #6
            Re: Burned thermostats

            Originally posted by plumbertim1975 View Post
            What could have caused this?
            \

            It's common, either a short in the t-stat or a bad element will cause it.

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            • #7
              Re: Burned thermostats

              I'm thinking not a short to ground because that should have tripped the breaker. Probably a loose connection at the lower element or t-stat that overheated, caught fire, and then followed the sheathing of the wire up.
              "Man will do many things to get himself loved, he will do all things to get himself envied." Mark Twain

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              • #8
                Re: Burned thermostats

                I have questions. What size breaker? What size elements? Obvious amperage problem, wires not twisted together at connection creating an arc, loose wires. I cannot see the wiring at the top of the heater could have had a larger sized wiring that did not throw the breaker and instead fired up the stats.
                We have many water heaters wired to a dryer connection that can carry up to fifty amps and the heater draws 17 amps. The wiring will handle high amperage without blowing the breaker causing issues elsewhere.

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                • #9
                  Re: Burned thermostats

                  Originally posted by rich34232 View Post
                  I have questions. What size breaker? What size elements? Obvious amperage problem, wires not twisted together at connection creating an arc, loose wires. I cannot see the wiring at the top of the heater could have had a larger sized wiring that did not throw the breaker and instead fired up the stats.
                  We have many water heaters wired to a dryer connection that can carry up to fifty amps and the heater draws 17 amps. The wiring will handle high amperage without blowing the breaker causing issues elsewhere.
                  I can not answer all your questions because I am not an electrician. I can tell you that it had a thirty amp double pole breaker.

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                  • #10
                    Re: Burned thermostats

                    I guess I have let you guys take enough guesses. The homeowner told me that he had replaced the thermostats a while back and that is has not opperated properly ever since then.
                    Thanks for the replies.

                    Comment


                    • #11
                      Re: Burned thermostats

                      Did he install 110 volt stats? There must be a reason they fired up.The 230 volt would not burn up unless installed wrong or pulling to many amps.

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                      • #12
                        Re: Burned thermostats

                        What made the home owner think he needed new thermostats ?

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                        • #13
                          Re: Burned thermostats

                          Originally posted by DELCASE View Post
                          What made the home owner think he needed new thermostats ?
                          He likes keeping us all in limbo. WTF actually happened?

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                          • #14
                            Re: Burned thermostats

                            Originally posted by Don the plumber View Post
                            He likes keeping us all in limbo. WTF actually happened?
                            No need for profanity. I have not replied because I don't have all the answers. As I stated before, I am not an electrician. I don't know how to calculate amps. I got to the job, saw the shape of the heater, told homeowner it need to be replaced (he already new that). So I did. The power was off when I got there. When the water heater was full he turned the breaker back on. It has been over a week now and working fine.

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                            • #15
                              Re: Burned thermostats

                              Someone could have replaced the elements with higher voltage/amp draw on the wire setup.

                              J.C.

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