Measuring Phase to Phase voltage using Multimeter

AI Thread Summary
Measuring phase-to-phase voltage with a multimeter involves connecting the positive probe to one phase and the negative probe to another, resulting in an RMS voltage reading that reflects the difference between the two sinusoidal voltages. Digital multimeters sample the voltage several times per AC cycle to calculate this RMS value, while analog multimeters may yield inaccurate readings at higher frequencies. The discussion emphasizes the importance of correct terminology, noting that "line-to-line voltage" is the appropriate term instead of "phase-to-phase voltage." Observations of voltage changes in a testing setup suggest that adjustments to one phase voltage can affect others, indicating potential imbalances in the system. Understanding the relationships between phase voltages and their implications for system balance is crucial for accurate measurements and analysis.
  • #51
awaygood said:
Phase voltages are measured ACROSS phases; line voltages are measured BETWEEN lines.
While I agree that lines/legs are not phases, how can phase voltage not be interchangeable with line voltage as you have described it?
 
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  • #52
'Gas lighting' is not a phrase I'm familiar with. But I have NOT 'just said' that anyone is WRONG... I have backed my opinions up with the reasons why I believe them to be wrong. I have even referred to definitions used by the IEC and ITE and referred them to a web blog which explains my reasons. What else would you have me do?
 
  • #53
Thread closed for moderation.
 
  • #54
awaygood said:
I repeat that my comment was aimed at the thread, because if he didn't actually say 'phase-to-phase voltage' how could I possibly be quoting him? You do know what 'quoting' means?
"Quoting" means you quoted someone else's words directly using the PF "quote" feature, just as I quoted you above in this very post. You're quibbling, and your attitude is not constructive, and this is not your thread, it's someone else's. That is neither good forum etiquette nor helpful to the person who started this thread, or to others who might read it.

awaygood said:
But I have NOT 'just said' that anyone is WRONG... I have backed my opinions up with the reasons why I believe them to be wrong.
Your reasons have nothing to do with the actual physics or electrical engineering involved; they're all about words. You want to use words like "voltage", "line", and "phase" a certain way; other people want to use them a different way.

awaygood said:
referred them to a web blog
A web blog is not a valid reference. If there are official publications of the organizations you mentioned that give the definitions you are using, you could reference those. Or you could if this thread were going to stay open, which it's not. But you should keep all that in mind for future threads.
 
  • #55
The OP is gone and the thread topic has been sufficiently addressed. The thread will remain closed.
 
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