So correct me if I am wrong it is not the vertical rotation of the fuse outside the fuse receptacle and reinsertion of the fuse, but the rotation of the fuse on the horizontal plane while the fuse is in the holder. Please advise.Short of sticking your finger in there to see which side kills you, you will never find out which side is live, unless you are a technician with an ac voltage multimeter and have the knowledge on how to use it. And BTW!!! AC mains is non directional anyway!!!
Thank you
So return them and get your $600 back, and put back the $1 worth of fuses you took out, before the return time runs out!!!.
Cheers George