Sven,
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The reason for connecting the live and neutral sides properly is that some TV sets, if you reverse the polarity of the flex, you are making the metal "chassis" live.
Most TV sets these days, by virtue of the PSU have a "Hot-Chassis" running at half mains supply voltage, during thier normal operation.
Someone could also prove me wrong on this one too!.
C-H,
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In a real world situation, you have two wires from the telly. Is there any way you can wire them so that an immediate danger arises in a properly wired house?
Well, with only 2 wires there are only 2 ways that the TV plug can be wired (if you discount the Earth terminal).
One is the right way and the other will not really cause a hazard as such, but it will mean that the internal fuse in the TV set will then be in the Neutral.
If the TV is the Double Insulated type that uses a standard Wire-wound Transformer, the polarity of the plug wiring isn't going to make an ounce of difference really. [Linked Image]