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Old 06-27-2011, 08:02 AM   #16
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New doorbell transforming overheating...


The OP made the comment that he installed two of these transformers, one at his house and one at a friends. Only one seems to have this issue. There is primary current flow all the time and secondary current only flows when a button is pressed. Since heat buildup would be the result of current flow, the only way to troubleshoot this would be with a AC current meter connected (clamped) on the primary side. Without this we are all guessing....

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Old 06-27-2011, 06:15 PM   #17
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New doorbell transforming overheating...


Take both transformers yours and your cousins out,
put them on a table with no load on there secoundarys
and monitor there temps,
you will soon see if there is a problem,
a faulty transformer will soon be too hot.

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