I'm just amplifying on your message, not being arrogant!
What you did was fine; I couldn't possibly take offense at it.
I made my message short simply because if we were talking about only 50 amps, I didn't see any concern.
Even at this, I think we are assuming sinusoidal waveforms.
You didn't mention whether XL at low frequency would heat the conductor more than happens for the same amps at 60 Hz.
Intuitively I was ready to derate the conductors in both directions: for skin effect at 400 Hz and for heating at 25 Hz.
But since I didn't know, I was waiting for you to come along and explain. I'm glad you did.
