” I think I might have seen one Chinese transformer in my carreer”
I thought the big ones were made in China.
Most of them are prolecs which are made in Mexico. Ermcos are somewhat common, also Mexican made. I don’t recall seeing a Chinese 3-phase, only china built one I’ve seen was a single phase, primed at the factory. Mexico doesn’t put primer on the metal so they’ll rot through and lose their oil if we don’t inspect them every few years. Howards, Coopers are American made and I think Central Maloni and ABBs are as well. Don’t see too many malonis. Maybe 20 ever in my experience