I'll add my 2 cents and say that any ac motor which goes 
into lo-line stall or hi-line saturation. I.e. refrigerators, air 
conditioners where the compressor can be damaged.  
A brownout causing the motor to stall drawing more 
current than normal and overheating. Or at a high enough 
level where a motor goes into saturation.  Then, it can 
draw enorous currents and overheat. 

Switchers can tend to go nuts in lo-line causing it to draw 
a high current with a high load. 

Regards, Doug McKean 


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