Quote Originally Posted by DeanEVO_Dude
Just to make a little correction, the Frequency only matters with devices that use the 50Hz/cps or the 60Hz/cps for timing, frequency, or speed........
Spot on (pun intended.......) haha

Also

Quote Originally Posted by geraint jones
As I mentioned reversing the polarity may just put the line voltage straight to chassis/earth .
Something I found out through my own total stupidity a couple of days ago and posted HERE as a warning