0
No, short to voltage and short to ground are not the same. A short to voltage occurs when a component is connected directly to a voltage source, bypassing the normal circuit path, which can lead to excessive current flow and potential damage. In contrast, a short to ground happens when a circuit connects directly to the ground reference point, potentially causing a fault condition that can also lead to damage. Both scenarios can be hazardous, but they affect circuits differently.
What else can I help you with?
If voltage is zero or very low on one phase and the same as line to line voltage on the other two. Is there a short to ground on the low voltage phase?
From your question it's hard to tell what might be the source of your problem. Is this a primary source to a machine or multiple circuits or from a transformer to just one device like a motor. If it is a short to ground then it should be tripping fuses or breakers if not then you have a unsafe situation in a ungrounded system. If the power is from a transformer then it may have an open winding or blown fuse on either the primary or secondary side.
Does voltage on ground mean open ground?
Voltage on ground can mean an open ground. It can also mean (high) current on ground, due to a ground fault such as reversed neutral and ground.
What is mean of Dead Short in Electrical Term?
The positive and negative voltage lines are tied together - OR - the positive line is shunted to ground with voltage appliedImproved AnswerA dead short is a connection with zero/near-zero resistance. It may be applied deliberately in order to perform tests, or, more usually, as the result of a catastrophic failure in some part/component."The positive and negative voltage lines are tied together - OR" - both lines of an a.c. supply are connected together."the positive line is shunted to ground with voltage applied" - OR - the negative line is shunted to ground, etc etc.
Why there is two voltage rating on the same cable like 300V or 500V?
The first figure indicates the phase to neutral or ground voltage and the second is the phase to phase voltage. i.e. Vph-ph = 1.732Vph-n
Using an o scope to measure voltage not referenced to ground?
When using an oscilloscope to measure voltage that is not referenced to ground, it's important to ensure that the oscilloscope's input is properly isolated to avoid ground loops or short circuits. You can use differential probes or floating measurements that allow you to measure the voltage between two points without a ground reference. Make sure to set the oscilloscope to the appropriate coupling mode and scaling to accurately capture the waveform. Always be cautious about the oscilloscope's common mode voltage limits to prevent damage to the device.
The difference between short to a voltage circuit and short to a ground circuit?
A short circuit is an abnormal connection between two nodes intended to be at different voltages. A voltage circuit is caused intentionally for the purpose of voltage sensing. A ground circuit occurs between a phase and the ground.
What happens to voltage during a short to ground?
Basically, the same as if you had a short to neutral, since the neutral and ground are tied to the same bus bar in the breaker panel. The breaker should trip, or the fuse should blow. Supply of voltage then stops.See the answer to the Related Question about GFCIs - shown below - for information about circuit protection when even a small current flows to ground.
What is indicated by reading of battery voltage on the ground side of component?
That a short to ground exists in the circuit.
What is indicated by reading of battery voltage on the side of component?
That a short to ground exists in the circuit.
Does terminal negative and ground same?
Normally they are used as if they were same but ground means that this connection is linked to earth, negative means that this connection is linked to a negative terminal. It is possible that someone has named the terminal incorrectly and named it ground instead of negative. Voltage between negative terminal and ground is normally 0, that means that they are on the same potential and that there is no danger of short-circuit.
IF YOU HAVE A 277 volt circuit IN you go from PHASE 1 to ground what will your voltage be?
In a 277-volt circuit, if you measure the voltage from Phase 1 to ground, you should read approximately 277 volts. This is because 277 volts is typically the line-to-ground voltage in a three-phase system where the phase voltage is 480 volts. Therefore, when measuring from the phase conductor to ground, the voltage remains the same at 277 volts.
In a parallel circuit the voltage is across all branches?
the same In a parallel circuit, the voltage travels through all the closed circuit paths. They are not branches.
Should there be power from common to ground in wall socket?
120 volt wall outlets. Their could me a small voltage between neutral and ground,up to around 1.5 volts. What you are measuring is the voltage drop on the system at that point in the system. You see the neutral and the ground are at the same level some where up stream (service panel). The neutral is under the same load as the phase conductor, and the neutral will drop voltage same as the phase. This is in fact the way I measure voltage drop, (neutral to ground.) However don't get fooled by high imped. meter, They have a way of ghosting a voltage. Or floating high, You get a reading but the voltage is really not their.
What does ground do on a three prong plug receptacle?
The ground blade on a three blade plug (cap) is to provide a low impedance return to the voltage source. If the portable equipment develops a short in its circuit and goes to ground, it is this blade that will carry the short circuit current back to the supply distribution panel and trip the breaker open to cut off the supply voltage.
Can a numerical relay give protevtion to over current over voltage and short circuit current at the same time?
Yes. Most microprocessor based relays that have both voltage and current inputs can provide overcurrent and over voltage protection simultaneously. Short circuit current is the same as overcurrent.
If voltage is zero or very low on one phase and the same as line to line voltage on the other two. Is there a short to ground on the low voltage phase?
From your question it's hard to tell what might be the source of your problem. Is this a primary source to a machine or multiple circuits or from a transformer to just one device like a motor. If it is a short to ground then it should be tripping fuses or breakers if not then you have a unsafe situation in a ungrounded system. If the power is from a transformer then it may have an open winding or blown fuse on either the primary or secondary side.
What is the formula to calculate the line to ground voltage of 480v?
If by "line" you mean a wire conductor carrying 480volts AC then there can be no "line to ground voltage" or you would have a short circuit!Ground voltage, usually referred to as "Earth" in electrical terms, is at zero potential and thus connecting a live 480 AC line straight to Earth is extremely dangerous and unless there is a means to cut the voltage when a short occurs (in a house this will be the fuse box, these days usually containing RCB's) an electrical arc at temperatures hotter than the Sun will be produced at the point of the short, the rest of the wire will get so hot it melts and the thermal damage will spread to other wires or any combustable materials in the nearby vacinity and a raging fire could easily ensue!There are tables giving the electrical breakdown resistance of the insulation used on electrical cables (Typically measured in kv per mm) and perhaps this may be more helpful to you.AnswerOf course you can have a line-to-ground voltage! If the line conductor has a potential of 480 V measured with respect to ground, then there is a line-to-ground voltage of 480 V. Period! End of story! The very presence of a voltage between a line conductor and ground indicates that there is NO short circuit, as the voltage across a short circuit is zero! But to answer the question, there is no calculation involved. But you can measure it with a voltmeter.
