they were advertised as being in a fire, not the cause of the fire!

oh well, i was able to salvage the transfomers, very nice units
that are in the 2kva size if i had to make a guess

the end result is the transformers are about twice what i would likely have paid for them, but probably half of what they sell for new, so i can't complain too much.

you roll the dice and sometimes you crap out i guess.

actually i am very happy to get the transformers.

the upside is the design of the inverter is fairly easy to reverse engineer
the mosfet driver boards albeit fried, have very easily mapped traces and very few components all of which i can read,, and i have been very interested in mosfet drivers for a transformer anyway,, so i can write off part of the cost of these two monsters to education as it applies to mosfet and their drivers.

i think if i am reasonably careful i can salvage one of the logic boards and see if i can learn how the mosfets are controlled.

maybe someday i might even step up and build a modified sine wave inverter using industrial igbts as drivers
i have a 15kva 3phase transformer, and it would be cool to build a monster modified
sine wave 3 phase inverter in the 15 kva class to use for powering intermittently used shop equipment where efficiency is not a major concern.

would have been nice to have had enough out of two inverters to resurrect one, but sadly this is not the case.

it is evident that these inverters were installed without fuse protection on the dc buss, the 4/0 cables provided one heck of alot of amperage to reak havoc inside these inverters.

for the want of a fuse a couple of nice inverters bit the big one, and the coach they were mounted in i am sure has some serious smoke damage if not far worse.

thanks to all that have offered advice.