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Suspected transformer vandal killed at power mast
Rank: Elder Joined: 2/27/2007 Posts: 2,768
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sparkly wrote:simonkabz wrote:Kaigangio wrote:Impunity wrote:Baratang wrote:Kaigangio wrote:Impunity wrote:Speculz wrote:Impunity wrote:Muheani wrote:Speculz wrote:Impunity wrote:Mjasirii wrote:How comes the body is not charred. May be its the shock that killed the man, he is lucky he didnt get burned! How is he lucky? Thats easy...Identification bila need for DNA @muheani, thanks. Just remember that not all wazuans came out of class with something between their ears! Theirs was a wasted 16 years of 8-4-4. Again I ask how is he lucky?? Please comprehend the question before replying, the relatives are the lucky ones since they will identify him easily , how is he lucky since he is dead? Ok, lets say he is unlucky. But how does that help him either? You just don't get you guys!!! Judging by the type of transformer that is appearing in the picture, it is pretty obvious that it is an 11,000V/415V 3 phase delta/star power distribution transformer... There are three types of voltages at the input and output terminals: 1. At the primary side of the transformer, the voltage input is 11,000V (11kV) phase to phase or phase to ground (earth) 2. At the secondary side of the transformer, the voltage output is 415V phase to phase and... 3. At the secondary side of the transformer, the voltage output is 240V phase to neutral or phase to ground (earth) The more appropriate question to ask is which voltage actually killed the thief, the 240V, the 415V or the 11,000V??? So what voltage killed the fellow? Anyone who attended any elementary engineering class, ata kama ni bridging class at kagumo village polytechnic will know that the voltage doesn't kill, its the current! Hence Low voltage, high current and High voltage, low current! Be guided accordingly. @ impunity Your reasoning here is just but pure fallacy... So could you please tell us which of the two scenarios is lethal: 1. 100Amps at 5VAC 2. 0.001Amps at 240VAC He left me wondering there. But it is good enough for a holder of a welding degree. Does current just happen? Voltage is a factor of current, if I can recall my lessons in sociology. There can never be current without voltage, just like water cannot just flow with zero gradient. Quote:If voltage presented no danger, no one would ever print and display signs saying: DANGER -- HIGH VOLTAGE! Quote:The principle that "current kills" is essentially correct. It is electric current that burns tissue, freezes muscles, and fibrillates hearts. However, electric current doesn't just occur on its own: there must be voltage available to motivate electrons to flow through a victim. A person's body also presents resistance to current, which must be taken into account. Quote: Taking Ohm's Law for voltage, current, and resistance, and expressing it in terms of current for a given voltage and resistance, we have this equation: CURRENT=VOLTAGE/RESISTANCE Welding  There was an explanation why birds perch on high voltage wires but don't get fried. This milker of transformers should have borrowed some tips from the birds @simonkabz You are right. When you consider two terminals of a voltage source under open circuit conditions there is no current flowing since there is no impedance/load (either capacitive, inductive, resistive or a combination of the the three). If you connect a load across the terminals a current will flow whose magnitude will depend upon the size of the load... Next, if a human touches a live conductor in a circuit, he/she creates a potential difference between the contact point and any earthed surface that he/she may be stepping on. If the electric field created between the point of contact and the contact with the earth is big enough to break the dielectric media between the epidermis (skin) at the point of contact and the earth then he/she will begin to conduct electricity meaning a current will flow through him/her.. Immediately the person starts to conduct, the voltage difference across the person falls to a lower value... The level of conduction will depend upon the ionic composition of the persons cell sap and blood. The trouble with electrocution is, if a person has a much lower resistance due to a large number of ions in the cell sap and blood the current drawn by him/her from the voltage source is very high. If the voltage is sufficient to start the process of electrolysis in the blood and tissue cells, too bad for the person... @sparkly When a bird is stepping or resting on the high/low voltage live conductor it does not create any potential difference between itself and the conductor so nothing will happen. Even for a human, if you hang onto one of the High Voltage live conductor, nothing will happen...trouble comes when you are hanging onto one conductor and you decided to step onto a pole or an earthed surface or simultaneously hold another life conductor of a different phase.. @impunity I am still waiting for you to answer the question... ...besides, the presence of a safe alone does not signify that there is money inside...
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Rank: Elder Joined: 2/27/2007 Posts: 2,768
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Kaigangio wrote:sparkly wrote:simonkabz wrote:Kaigangio wrote:Impunity wrote:Baratang wrote:Kaigangio wrote:Impunity wrote:Speculz wrote:Impunity wrote:Muheani wrote:Speculz wrote:Impunity wrote:Mjasirii wrote:How comes the body is not charred. May be its the shock that killed the man, he is lucky he didnt get burned! How is he lucky? Thats easy...Identification bila need for DNA @muheani, thanks. Just remember that not all wazuans came out of class with something between their ears! Theirs was a wasted 16 years of 8-4-4. Again I ask how is he lucky?? Please comprehend the question before replying, the relatives are the lucky ones since they will identify him easily , how is he lucky since he is dead? Ok, lets say he is unlucky. But how does that help him either? You just don't get you guys!!! Judging by the type of transformer that is appearing in the picture, it is pretty obvious that it is an 11,000V/415V 3 phase delta/star power distribution transformer... There are three types of voltages at the input and output terminals: 1. At the primary side of the transformer, the voltage input is 11,000V (11kV) phase to phase or phase to ground (earth) 2. At the secondary side of the transformer, the voltage output is 415V phase to phase and... 3. At the secondary side of the transformer, the voltage output is 240V phase to neutral or phase to ground (earth) The more appropriate question to ask is which voltage actually killed the thief, the 240V, the 415V or the 11,000V??? So what voltage killed the fellow? Anyone who attended any elementary engineering class, ata kama ni bridging class at kagumo village polytechnic will know that the voltage doesn't kill, its the current! Hence Low voltage, high current and High voltage, low current! Be guided accordingly. @ impunity Your reasoning here is just but pure fallacy... So could you please tell us which of the two scenarios is lethal: 1. 100Amps at 5VAC 2. 0.001Amps at 240VAC He left me wondering there. But it is good enough for a holder of a welding degree. Does current just happen? Voltage is a factor of current, if I can recall my lessons in sociology. There can never be current without voltage, just like water cannot just flow with zero gradient. Quote:If voltage presented no danger, no one would ever print and display signs saying: DANGER -- HIGH VOLTAGE! Quote:The principle that "current kills" is essentially correct. It is electric current that burns tissue, freezes muscles, and fibrillates hearts. However, electric current doesn't just occur on its own: there must be voltage available to motivate electrons to flow through a victim. A person's body also presents resistance to current, which must be taken into account. Quote: Taking Ohm's Law for voltage, current, and resistance, and expressing it in terms of current for a given voltage and resistance, we have this equation: CURRENT=VOLTAGE/RESISTANCE Welding There was an explanation why birds perch on high voltage wires but don't get fried. This milker of transformers should have borrowed some tips from the birds @simonkabz You are right. When you consider two terminals of a voltage source under open circuit conditions there is no current flowing since there is no impedance/load (either capacitive, inductive, resistive or a combination of the the three). If you connect a load across the terminals a current will flow whose magnitude will depend upon the size of the load... Next, if a human touches a live conductor in a circuit, he/she creates a potential difference between the contact point and any earthed surface that he/she may be stepping on. If the electric field created between the point of contact and the contact with the earth is big enough to break the dielectric media between the epidermis (skin) at the point of contact and the earth then he/she will begin to conduct electricity meaning a current will flow through him/her.. Immediately the person starts to conduct, the voltage difference across the person falls to a lower value... The level of conduction will depend upon the ionic composition of the persons cell sap and blood. The trouble with electrocution is, if a person has a much lower resistance due to a large number of ions in the cell sap and blood the current drawn by him/her from the voltage source is very high. If the voltage is sufficient to start the process of electrolysis in the blood and tissue cells, too bad for the person... @sparkly When a bird is stepping or resting on the high/low voltage live conductor it does not create any potential difference between itself and the conductor so nothing will happen. Even for a human, if you hang onto one of the High Voltage live conductor, nothing will happen...trouble comes when you are hanging onto one conductor and you decided to step onto a pole or an earthed surface or simultaneously hold another life conductor of a different phase.. @impunity I am still waiting for you to answer the question... @ baratang If you look at the picture, the dead thief is hanging on the right hand side of the transformer. The Low voltage (415V/240V ) fuse bar is on the left hand side meaning that the secondary output bushes, terminals and the connection links between the secondary terminals and fuse bar of the transformer are on the left hand side. It goes therefore without saying, that the High Voltage (HV) primary side of the transformer (bushes, terminals and connection leads between the terminals and overhead HV conductors) is on the right hand side. The idiot must have been hit by the 11,000V (11kV)...  ...besides, the presence of a safe alone does not signify that there is money inside...
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