Hal,
That's a big bummer! The only things that could have happened are two.
They had the leads mis-labeled or there was a nick or something on the
primaries winding causing a short. If it was hooked up wrong, you would
have known it because it would have made a large hum and should have
kicked a breaker like it did. That would have put the two primary
windings out of phase and that will show pretty darned quick. It could
have had a short in the winding too. It should have showed up on a
burn-in if they do one. Surely, they let one burn in for longer than
five seconds! I always did a burn-in with and without a load on the
secondary to assure things were up to snuff for at least an hour with no
load and with load, what ever the duty cycle demanded. However, I don't
see it burning out the winding that quick being out of phase without you
catching it first! This makes a man wonder about some manufacturers
quality control don't it? Especially for the price they charge, you'd
think they should be tested for NASA! I'll bet you they'll want you to
pay for the shipping back on top of it, and shipping transformers aint
cheap by no means! I do believe I would fight them on any shipping again
for something their fault.
Will Matney
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