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The Water Cooler
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Electrical Advice, please
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<blockquote data-quote="TJay74" data-source="post: 1542415" data-attributes="member: 5857"><p>Also Amps is the pressure in the water hose example, not volts if memory serves me right.</p><p></p><p>Also the reason that a 12v battery does not harm a person is not really the current size, it is more related to what is called Potential effect. Basically the 12v system does not have enough potential energy to electrocute a person. I dont remember from class where it starts but I think it is around 25v or so that the Potential is over come. This is the same principal that is used in how high voltage electricians (lineman) are able to touch the lines without being electrocuted. They are at the same potential as the lines (same voltage). It is when they are grounded and standing on the ground that they are a lessor voltage and able to be electrocuted. Then you start getting into Step Potential as well.</p><p></p><p>Ohms law is I=V/R</p><p></p><p>I is Amps</p><p>V is Volts</p><p>R is resistance (ohms)</p><p></p><p>Amps is found by dividing volts by resistance, resistance is found by dividing volts by amps, volts is found by multiplying resistnace by amps.</p><p></p><p>The is also the Power formula as well.</p><p></p><p>P= I/E</p><p></p><p>P is Watts</p><p>I is Amps</p><p>E is Energy or Voltage</p><p></p><p>To find out how many watts something is using you take I * E to get Watts.</p></blockquote><p></p>
[QUOTE="TJay74, post: 1542415, member: 5857"] Also Amps is the pressure in the water hose example, not volts if memory serves me right. Also the reason that a 12v battery does not harm a person is not really the current size, it is more related to what is called Potential effect. Basically the 12v system does not have enough potential energy to electrocute a person. I dont remember from class where it starts but I think it is around 25v or so that the Potential is over come. This is the same principal that is used in how high voltage electricians (lineman) are able to touch the lines without being electrocuted. They are at the same potential as the lines (same voltage). It is when they are grounded and standing on the ground that they are a lessor voltage and able to be electrocuted. Then you start getting into Step Potential as well. Ohms law is I=V/R I is Amps V is Volts R is resistance (ohms) Amps is found by dividing volts by resistance, resistance is found by dividing volts by amps, volts is found by multiplying resistnace by amps. The is also the Power formula as well. P= I/E P is Watts I is Amps E is Energy or Voltage To find out how many watts something is using you take I * E to get Watts. [/QUOTE]
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