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-   -   high voltage a on secondary side of trans (http://www.diychatroom.com/f17/high-voltage-secondary-side-trans-159584/)

hvactech54 10-09-2012 10:25 PM

high voltage a on secondary side of trans
 
I heard this could happen, but have never seen it. The only way I can see this happening is the secondary winding was touching the primary. The trans was used but it said good on it, so I didnt think about ohming it out. Has any one ever seen 100V on the secondary side of a 24V trans? And yes I took secondary side out of the circuit.

Missouri Bound 10-09-2012 10:32 PM

Sounds like you already have it figured out.:thumbsup:

hvactech54 10-09-2012 10:37 PM

so does that mean you have seen this. Did it trash your fan relay? Im not sure why I just have a hard time believing this could happen.

Missouri Bound 10-09-2012 10:39 PM

Lucky it's only the relay you lost. Thermostat, circuit board etc. are all vulnerable to a line voltage surge.


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