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When the neutral switch is open where do the line current flow to?
There is never a switch installed in a neutral line.
If in the three phase connection phase to phase voltage is 400v what will be the phase neutral voltage?
The formula to use is, phase voltage /1.73 = phase to neutral (ground) voltage.CommentThere is no such thing as a 'phase to phase', or 'phase to neutral' voltage. The correct terms are 'line to line' and 'line to neutral'. So the above answer should read: line voltage/1.73= line to neutral voltage = phase voltage.
How do you tell if you have delta or wye power?
In Europe, low-voltage three-phase distribution is by means of a four-wire system (three line conductors and a neutral) supplied from a wye-connected transformer secondary. In North America, low-voltage is supplied from a delta-connected transformer secondary, one phase of which is centre-tapped and earthed (grounded). The single-phase supply to residences is then supplied by that particular phase, giving 240 V line-to-line and 120 V line-to-neutral. You can tell if you have a delta power when the phase voltage is equal to the line voltage and that you have a star power when the phase voltage =root 3(THE LINE VOLTAGE).
Do all electrical power sources flow to earth e.g. Secondary winding of an isolating transformer with no earth connection on the neutral line?
There are situations where the secondary of a transformer is not grounded and the neutral is not connected to the neutral of the primary. This can cause a potential shock hazard so the secondary side needs to be protected.
What is the Phase to neutral voltage on a 400 volt 3 phase power supply?
The line-to-neutral (not 'phase-to-neutral'!) voltage on a 400V 3-Phase wye-connected system is 230V.Line voltage is the voltage as measured between any two (2) line conductors (hence its name!). Line voltage is often referred to as the 'line-to-line voltage'.Phase voltage is the voltage as measured between any single line and neutral. Phase voltage is often referred to as a 'line-to-neutral' voltage."400V" on a 400V 3-Phase wye-connected power supply indicates its line voltage. Line voltage in a wye system is always the phase voltage multiplied by the square-root of "3" (1.732) and reflects the vector sum of two individual phase voltages present in a three phase system.Thusly, if the line voltage is "400V", then the phase voltage is 400V divided by the square-root of "3" (1.732), which is 230V.Examples of this for North American power systems are 120/208V, 277/480V and 347/600V. Examples for other areas of the world are 220/380V, 230/400V and 240/415V.
Is it advisable to use line to neutral power supply on a single phase residential area when the safety is concern?
line to line or line to neutral is the only way to use power line to ground if a FAULT current in the ground is a problem that needs to be corrected, an insulation fault
What is the power line voltage between phase and earthing?
It is the same as phase to neutral. As the neutral is earthed at the electricity suppliers transformer.
How does a single phase line to line circuit work if there is no netral?
You said it yourself. The power is from line to line, or more correctly, from hot to hot. There is no neutral involved.
Why is neutral line needed in home electricity?
A fuse is NOT fitted in the neutral phase of single phase domestic power supply. The fuse is fitted in the LINE (also mistakenly called Live). If you have checked and found that the fuse is in the neutral, something is wrongly wired.
Why no electric shock from neutral line?
There is normally no voltage on the neutral line because the neutral line is grounded. However, and this is always important, do not assume that neutral is grounded, nor that there is not an elevated voltage on neutral or ground due to a possible ground fault.
When the neutral switch is open where do the line current flow to?
There is never a switch installed in a neutral line.
What voltage should be used when making three phase calculations?
With a three-phase system the voltage quoted is the line-to-line voltage between any two live lines. To find the line-to-neutral voltage divide by 1.732 which is sqrt(3). The power supplied from each phase is the current times the line-to-neutral voltage (times the power factor if less than 1). To find the total power when the currents are equal, multiply by 3.
Is the black wire connected to the line or the grounded line when connecting a power cord to a motor?
Black is the hot side of the line, white the neutral side, green (or rarely bare) wire is the ground.
How does a three phase line to line circuit work if there is no neutral?
You said it yourself. The power is from line to line to line, or more correctly from hot to hot to hot, in a delta configuration. There is no neutral involved.AnswerThe phasor sum of the three line currents is always zero, so there is no requirement for a neutral conductor. Expressed another way, at any instant in time, if you were to add the three line currents together, taking their directions into account (some would be flowing towards the load; others away), then the answer would be zero.
What will happen if phase and neutral get reversed in power line and what action we have to take against it?
The breaker feeding the line will trip or if it is a fused circuit the line fuse will blow open. In regards to fuses protecting the line sometimes two line fuses will blow.
Is the blue line a part of the neutral zone?
The blue line is what separates the neutral zone from a team's offensive and defensive zones.
If in the three phase connection phase to phase voltage is 400v what will be the phase neutral voltage?
The formula to use is, phase voltage /1.73 = phase to neutral (ground) voltage.CommentThere is no such thing as a 'phase to phase', or 'phase to neutral' voltage. The correct terms are 'line to line' and 'line to neutral'. So the above answer should read: line voltage/1.73= line to neutral voltage = phase voltage.
