I just was given a Type K transformer that needed a new cord, so I replaced it. I don't believe this transformer was ever apart earlier, it looked fine and original when I removed the works from the case. After replacing the cord and checking all the various voltage options, everyone is reading 3-4V higher than what the info plate states on the side, and I mean every possible combination is reading high. The transformer has a nice even hum as it runs and I have had it on for around 10 minutes at a time with no problems. I am not enough of an engineer to know if this is a problem, any advice would be helpful. The transformer was made in 1937.
