2006-11-05 17:25:21 · 5 answers · asked by Albin 4 in Science & Mathematics ➔ Engineering
"0v" is a proper method ?
that mean neutral = earth
can we short the "neutral and earth" to reduse the voltage if it is high ?
thank u for your answers
2006-11-05 17:42:41 · update #1
Normally this is a "Restive" not voltage question/answer, and the proper neutral to ground = 2 Megg ohms (min.) this being incorporated in a residential application.
Higher voltage in let us say a 3-phase utilization this # is on the low side. (assuming a.c. source. d.c. is a completely different animal!
2006-11-05 17:39:09 · answer #1 · answered by Anonymous · 0⤊ 1⤋
The Neutral is normally grounded at the substation. Your local regulations will tell you the maximum float voltage.
In GB we did have a 240V single phase supply derived from a 3 phase distribution system. In some fault conditions the neutral carries no current, and it is possible for the mains voltage in a house to rise to the peak of the 415V supply. This means that the filtering capacitors on your TV need to be rated at some 1200V.
Many people replace them with lesser rated devices, so when the neutral momentarily fails there is a loud bang and a lot of destruction on your TV PCB. If you have different supply voltages work them out for yourseves. The british system will gradually be set to a continental standard of 230V as equipment is replaced.
2006-11-06 06:34:49 · answer #2 · answered by Rufus Cat 3 · 0⤊ 0⤋
With everthing hooked up and connected properly, it should be zero. The neutral and ground wires are tied together at the service panel on a common wire shunt.
HOWEVER, it is important to remember that when the neutral is disconnected at the outlet and there is a load or transformer on the circuit, it could well be 120 volts live to ground - basically, it's the return path for the completed circuit. It wouldn't be wise to be the one that completes this neutral circuit to ground ..... OUCH!
2006-11-05 17:48:56 · answer #3 · answered by LeAnne 7 · 0⤊ 0⤋
Zero, nil, nothing, zilch.....they should be EXACTLY the same. They won't be the same because of the resistance of the power lines back to the power station. Sometimes the neutral line is earthed at the substation, or even the meter box, making the difference less.
2006-11-05 17:32:08 · answer #4 · answered by Mez 6 · 0⤊ 0⤋
There isnt one, but I've measured it at 2V.
Earth and neutral should be at the same potential.
If you are getting a high value there is something wrong with the installation.
2006-11-05 17:34:22 · answer #5 · answered by Anonymous · 1⤊ 0⤋