xo ?

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jmishmael3

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i kind of asked my question wrong, however, i noticed the xo ? was already discussed in great detail previously, sorry should have looked, thanks for the great site.
 
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jmishmael3 said:
i noticed a fellow worker bonding xo to case, don't modern transformers have that bond from the factory or is simply a core bond?
I've never seen one factory bonded.
 
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Tic-tac-toe...XO?
 
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