I have a panel in our shop that has three SQD 9070T (1000 VA) transformers installed adjacent to one another. The cases of the transformers are getting very warm to the touch with no load. The only mfg recommendation that I can find is merely air spacing requirements. That being said, it looks like something is causing these things to heat up (eddy currents????). The coils however, are not warm, just the outside case. Anybody run into this before? Any ideas to the cause? Thanks!
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