Smitty Two wrote:
snipBut I too wonder, where is the OP that he has
brownouts? I thought those were so, like, last century.

We have plenty of power fluctuations here in Austin, Texas. Some are
quite noticeable, while others are merely enough to trigger a UPS
without causing much impact otherwise. I believe they come from a
variety of causes, including sudden load variations, cars hitting
utility poles, equipment (especially transformer) failures, severe
weather bringing down lines, etc.