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  • Industrial Isolation Transformer From Trash

    Hi Jimmie, the 1/10 of an amp you mention is the threshold for muscular contraction that german scientists discovered during World War 2. You are correct that 60hz ac power causes additional problems, however it is current that kills. The special section of the NEC you refer to is the following article: 250.21 AC systems not required to be grounded, which this system does not meet the requirements of.None of these details change the fact that if you do touch either of the exposed terminals on the sides of that receptacle, or the same for anything you might have plugged into this device...you might die.

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  • Industrial Isolation Transformer From Trash

    Hi Tanner, great job exploring electrical theory. I want to encourage you to keep it up. I would also like to encourage you to start expanding your research skills as you post instructables like this. It is particularly difficult to find reliable information across the internet on electrical systems, which is why you are getting some very brief comments regarding how dangerous this project can be.I want to ask you to make some edits in the name of safety:Please remove the comments about protection from lethal shock.An isolation transformer in no way removes the potential for lethal electric shock. A GFCI for personal protection is the only device designed for that. Electric current past .006 amps has the potential to cause the human heart to go into fibrillation, which is why GFCI recep...see more »Hi Tanner, great job exploring electrical theory. I want to encourage you to keep it up. I would also like to encourage you to start expanding your research skills as you post instructables like this. It is particularly difficult to find reliable information across the internet on electrical systems, which is why you are getting some very brief comments regarding how dangerous this project can be.I want to ask you to make some edits in the name of safety:Please remove the comments about protection from lethal shock.An isolation transformer in no way removes the potential for lethal electric shock. A GFCI for personal protection is the only device designed for that. Electric current past .006 amps has the potential to cause the human heart to go into fibrillation, which is why GFCI receptacles open the circuit between 4-6mA during a ground fault. If that was a 300W fan you were running at 120V then the current is 416 times a potentially lethal shock.The potential for a human becoming part of the circuit (ungrounded or otherwise) is the hazard, and an isolation transformer has close to nothing to do with that.I understand this is an experiment, but if you are interested, the use of the device violates the 2014 NEC (current for a few more months) section 250.20(B)(1) -systems required to be grounded.The last request I have is for you work on the build a little bit. The use of combustible materials is one thing to change, the next would be to cover the exposed energized parts. Plastic trim for the receptacles are less than a dollar at a hardware store.Keep learning and be safe.

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