Forum Discussion
professor95
Aug 11, 2007Explorer
toprudder wrote:
You mean neither of the conductors is referenced to ground? Not correct, they have 230v with one hot and one neutral. It is one leg of a three phase 400v system with a neutral, just like there is a 208/120v three phase system in the US. It is also 50 Hz.
No, I didn't mean that at all.
As you know, when you are sitting in a classroom with an instructor the student can stop the lecture/demonstration at any time and ask for clairification or pose additional questions. No so with something like I just wrote. This method is called DIS (Directed Independent Study). Those receiving the lesson do not have the clarification/questioning opportunity until a later date when they meet or talk with the instructor/professor.
Another bad thing about DIS is that you can never be sure that what you want to say is what students are hearing until you have done many similar lessons and reviewed all the feedback. Ultimately, this type of data is used to develop most of our Distance Learning on-line courses.
I never ment to contend that in European countries that there is no reference to ground. I only ment to convey that they do not use derived voltage via a grounded centertap in residential systems like we do in North America.
In fact, the HV lines that deliver 23,000+ volts over two wires in North America also reference one of the conductors to ground as well. I did not mention that in my original writing because at the time I felt it was more information than was needed for understanding of the lower voltage side.
You are way above the average guy on this forum in your understanding of electrical/electronic systems. Shucks, it is your field and you are obviously a very smart, precise man. People with your background can really keep instructors/professors on their toes in a mixed experience class ;) - believe me, I know! Just remember, I did not write the explaination for you nor did I intend for it to be on your higher level. Folks like O&S who were asking for the Theory 101 were my target.
Why not jump on in there with me and help give those who have not been as well educated as we have in electricity/electronics the opportunity to grasp understanding that will give them answers to their questions and hopefully, result in safer use of portable generators on RV systems? Even more help is needed......
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