0
- phase - hot
- neutral - return
- ground, earth - safety ground
Unless used in this way, the resulting terms, 'line voltage (and current)' and 'phase voltage (and current), are meaningless.
The three 'hot' wires that interconnect the supply and the load are termed 'lines' (which is why voltages measured between them are called 'line voltages' and the currents passing through them are called 'line currents'). The term, 'phase', describes the connection made between any line conductor and the neutral conductor (in the case of a four-wire system), or betweenany pair of line conductors (in the case of a three-wire system). To put it another way, a 'line' describes an individualconductor or terminal, whereas a 'phase' describes whatever is connected between pairs of conductors or terminals.
What else can I help you with?
What is meant by neutral grounding reactor?
Neutral-earthing reactors or Neutral grounding reactors are connected between the neutral of a power system and earth to limit the line-to-earth current to a desired value under system earth fault conditions.
When you test the outlet you get no current between power and neutral but you get it between power and ground?
There is an open circuit on neutral. You should have power between hot and neutral, as well as between hot and ground. Note well, however, that you should not pull any power between hot and ground, because ground is not intended to be a current carrying conductor - it is only there as a protective earth ground in the case of fault. You can not easily tell, at the outlet, if neutral and ground is reversed - you need to pull a load and then double check with a clamp on ammeter at the distribution panel.
Why neutral have zero voltage?
Your question should read, 'Why does a neutral have zero potential?' 'Voltage' means 'potential difference', and you cannot have a potential difference at a single point. A neutral doesn't necessarily have zero potential although it is connected to earth (ground). This is because the potential of earth isn't literally zero; it's just considered to be zero, in the same way that sea level is considered to be zero in terms of height. Furthermore, there is often a voltage drop between the neutral and earth -in which case, the potential of the neutral can be several volts higher than the potential of earth.
Can you use the earth wire between room stat and honeywell board as a neutral?
ABSOLUTELY NOT!The protective earth ground wire is only there to provide a low resistance path to ground in the event of a short circuit so as to trip the protective device. Operational current is never, under any circumstances allowed to be passed on earth ground. Use neutral for neutral and ground for ground.CONSULT A QUALIFIED AND LICENSED ELECTRICIAN !!!!
Can you glow led by using neutral and earth?
If you connected neutral and earth (ground) to each lead in an LED and it glowed then this would be evidence of a ground fault.
Could anybody help the reading between earth and neutral in the incomer supplying power to the house is 120V while live and neutral reads normal 220V and live-earth reads up to 298V.?
It sounds like either you have a bad ground connection or that ground and neutral are NOT bonded at the main panel only. There is either a strap or screw in main panel that connects ground and neutral. Also check the connection to a ground rod and that the ground rod is intact.
What is difference between nutral and earth wire?
A neutral wire provides a return path for the hot lead while an earth or "ground" wire is provided as a safety function only that is not normally intended to carry current except for the purpose of operator protection.
What is difference between groundearth and neutral?
There is no real difference except the terminology. All have 0 potential to ground or should have under ideal conditions. Statement above is misleading Neutral is used to describe the common point of three phase power systems and it may have a voltage above earth if you have an unbalanced system. Normal practice is to bond the neutral to earth so as to allow earth fault current to return to the source (transformer or generator). It should never be assumed that neutral wiring is at same potential as ground. Except at point where earth is connected the neutral is insulated to same level as phase conductors and it should be assumed in all cases that it may, especially under fault conditions, assume a significant voltage with respect to earth.
What is the difference between open ground and earth ground?
Earth : the planet third in order from the sun, having an equatorial diameter of 7926 miles (12,755 km) and a polar diameter of 7900 miles (12,714 km), a mean distance from the sun of 92.9 million miles (149.6 million km), and a period of revolution of 365.26 days, and having one satellite. Ground : the solid surface of the earth; firm or dry land Neutral : having zero charge or potential If you are speaking in terms relating to the physics of matter here on earth we use earth as the neutral!
In the electrical system of the US what is the difference between the neutral and the PE Ground?
US NEC: The neutral conductor is an insulated grounded conductor used as the current return in a circuit. The color designation for neutral is white. The protective ground (PE, protective - earth) is a non-insultated grounding conductor used to shunt fault current to ground, tripping the protective device. The color designation for PE ground is green. Neutral and PE ground are tied together at the distribution panel. PE ground is also connected to a solid earth ground, such as grounding rods driven into the earth. Downstream of the distribution panel, PE ground is never used to carry operational current. Any current flow on PE Ground, other than parasitic current, is considered a ground fault, which must be corrected. In fact, GFCI (Ground Fault Current Interrupting) breakers will trip when neutral current does not match hot current, an indication of PE ground current flow.
Why dont you use earth wire place of neutral?
Earth is neutral, but only at the distribution panel and upstream from it. Downstream of the distribution panel, earth and neutral shall not interchange or cross connect their connections or their roles - earth is protective ground - and neutral the current carrying return conductor.
What to do when there is voltage at neutral?
Quality of the earth pit needs to be checked and enhanced. Check the continuity of the earth bus/ conductor, check for improper joints in the earth bus / conductor and correct it. Earth resistance will reduce and the voltage difference between neutral and earth will also reduce. Check also for the loose or floating neutral and correct it.
