Hi,
Say you get some torroid inductor samples given to you, as an alternative to an inductor you have.
Its for offline PSU input filter.
1mm ECW.
Goes in the live line.
At startup, voltage across it will be mains peak.
Turns at start are next to turns at end.
So should you do a insulation test?, ie with two of them connected to a probe of hi-pot tester...and touch them together.
Written Spec doesnt give insulation grade of the enamel. Just gives L and RDC.