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In the Forum: Audio Discussions
In the Thread: It’s mad, mad, mad... electricity.
Post Subject: Cheater plugs vs. isolation transformerPosted by manisandher on: 3/26/2011
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 Romy the Cat wrote:
I will go today to a store and will buy 25 cheating plugs, completely isolating  my playback ground from PP2000 ground an use my own ground.


Well this is what I was struggling with. Will cheater plugs truly isolate your playback from the PP2000 if the Neutral is still shared between your playback and the PP2000? Of course, if your own ground is not bonded to the Neutral, then yes they should. But is this a safe thing to do?

My feeling was/is that to do this properly, one needs to employ an isolation transformer. In which case, it may as well be a 'massive' one to keep the overall system impedance to a minimum (I agree with tuga here - this would equate to the highest short circuit current. Here in the UK running at 240V, my short circuit current is >50A).

But as I said before, I'm no EE...

Mani.

PS:

Transformer_Mani.jpg

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