"vMike" wrote in message
. ..
I have a 120v to 24vac transformer for a lawn sprinkler system that has
failed about 3 times since I purchased the house. This time I took the
windings apart and found the break in the 120v winding. I live in a
lightening prone area. Is this failure most likely from power surges or is
there some other possible cause.

Thanks.

Mike




I do not think the lightning is the cause, I think it was caused by the
overheating of the transformer itself, this happened because the transformer
is rate too low for your load. Check the voltage before applying the load,
and then apply the load to see its voltage drop. If the drop 40% or more
then, you'll need to buy a bigger transformer, do not buy the exact model.



Cam