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I think you are right. 400Hz is perfectly fine for resistive loads such as light bulbs and electric heaters. It is also OK for most things that come right off the line to a rectifier and a capacitor bank, which until recently included most switching power supplies. Now most of them use a PFC...

60 or 400Hz as long as it can be discussed civilly. yeah, not directly an auction post but it is close enough. No harm done. It's important that people know the difference between the uses of 60Hz and 400Hz generators. Thanks.