wrong to say voltage on its own in that statement, its a voltage potential that becomes a voltage when connected into a circuit. you mention a circuit if you measure with reference to earth, geddit now?
Electric shock treatment
- Thread starter sweb74
- Start date
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Right then.
Please give an example of a voltage potential saying approximately where it is and what voltage it is at.
Please give an example of a voltage potential saying approximately where it is and what voltage it is at.
Yes Exactly.
12V Potential difference between the two battery terminals.
230 (240) Potential difference between Phase & Earth (or Earthed Neutral)
No Potential Difference between either battery terminal and earth (unless you connect one battery terminal to earth)
12V Potential difference between the two battery terminals.
230 (240) Potential difference between Phase & Earth (or Earthed Neutral)
No Potential Difference between either battery terminal and earth (unless you connect one battery terminal to earth)
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God help us! thats why its termed as a voltage potential! make the circuit please!!! then talk about the potential difference across the load and the current flowing though the load and then lets leave it at that as my head is starting to hurt from all the banging against the wall.
He isn't. He's just another person who's pointing out that you're using the wrong words.tim west said:
tim, in the context of electricity, the word "potential" is merely slang for "potential difference", and it's assumed to refer to a voltage - you don't have to prefix it with the word "voltage", and you're in a tiny minority of people who seem to want to do it.
So all along we`ve been arguing about the same thing believing each other to take the opposite stance.
Sorry I must have misunderstood your post.
A voltage potential can only be a potential difference to another voltage potential and therefore current could flow between the two.
Glad we cleared that up .
Right let`s kiss & make up .
Sorry I must have misunderstood your post.
A voltage potential can only be a potential difference to another voltage potential and therefore current could flow between the two.
Glad we cleared that up .
Right let`s kiss & make up .
B
baz1968
http://www.fwi.co.uk/blogs/rural-life/2007/09/hanging-on-the-line.html
I feel sorry for the squirrel
read the post by Kevin
I feel sorry for the squirrel
read the post by Kevin
you really dont get the difference do you! ok one more time take the mains for example tie the bird's left leg to the live wire and its now at mains potential, forget all about earth, neutral for the moment as its not relevant as they play no part in this incomplete circuit, do you agree the bird is at mains potential? potentialthats all it is, connect the neutral or earth to its right leg and voila there miraculously appears a potential difference across the poor little birdie as he has resistance. the battery has a pd as its got internal resistance so perhaps a bad example when talking about voltages and relationships through insulation/resistance to earth. but the battery was used to denote the phrase voltage potential as in 12volts potential.
STOP SHOUTING.
Mains potential of that line that the bird has its leg on is at the POTENTIAL DIFFERENCE of that line to ...................... Earth.
The Earth itself Might be at a potential difference of 2000 milion billion volts to the Sun (or it might not).
You can only have a voltage (voltage potential if you like) if it is different to something else.
Unless by voltage potential you actually mean that something could potentially but as yet is not at a voltage to something else.
Mains potential of that line that the bird has its leg on is at the POTENTIAL DIFFERENCE of that line to ...................... Earth.
The Earth itself Might be at a potential difference of 2000 milion billion volts to the Sun (or it might not).
You can only have a voltage (voltage potential if you like) if it is different to something else.
Unless by voltage potential you actually mean that something could potentially but as yet is not at a voltage to something else.
stop shouting? youre the one using caps lock not me?
the bird scenario again as you describe is using the relationship of a 11kv line to earth, thats not what was said, you forget the insulator between the bird and the earth, called the air and therefore the resistance or in this case as its so high, insulator between the line and the birdie and ground(earth) is so high as to be "open circuit" so bernard was right no current flow no dead birdie! can you not understand that?
Hang on I got an idea.
Slightly different approach.
Bathroom shaver socket with isolation transformer.
What is the voltage potential of one hole in the socket?
Slightly different approach.
Bathroom shaver socket with isolation transformer.
What is the voltage potential of one hole in the socket?
there you go someone using the correct terminology, at a given time the hole will be at potential that the transformer can put out, off load it will be slightly higher than on load and that will stay a potential until you get reference to the other side of the transformer wherin it then becomes the pd of the circuit across the load whatever that may be dependant on the load.
and this is where youll say we differ as i say with one pin connected the load is at a voltage potential when two pins are connected as to make a circuit then the there is a potential difference across the load and thats why current flows through the shaver and turns the motor.
Relative to
[1] Itself.......Zero
[2] the other hole 230 volt hole 230 volt AC
[3] one of the 110 volt holes either 230 or zero.
[4] the other 110 volt hole about 120 volt
Any other reference point it would would have no rational potential as there is (in the ideal situation) go galvanic circuit between the two points and in the real world a very complex circuit of capacitive, mutual inductance and other non galvanic components exists with among other things the transformer bobbin and the hand holding the test instrument being prime components.
That pin say 240 if you like is only 240 with respect to the other pin (OK it will vary slightly depending whether or not load is attached).
But it is not 240 in respect to earth.
Your 11KV line is only 11KV with repect to earth.
Take normal mains (Low voltage).
Phase 1 is 240 with repect to earth (& N).
Phase 2 & 3 likewise 240 to E (& N).
However Phase 1 to 2 (or 3) is 415.
I`m speaking in old currency now.
In each case there is a potential difference between the two being measured, therefore current can flow
But it is not 240 in respect to earth.
Your 11KV line is only 11KV with repect to earth.
Take normal mains (Low voltage).
Phase 1 is 240 with repect to earth (& N).
Phase 2 & 3 likewise 240 to E (& N).
However Phase 1 to 2 (or 3) is 415.
I`m speaking in old currency now.
In each case there is a potential difference between the two being measured, therefore current can flow
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