I stand corrected. To residential areas, the input to the stepdown transformers that one sees on poles is typically 7,200 or 14,400 volt per one of the manufacturers, GE. The legs to ground, single phase are 120, across two legs, 240. The outputs of those transformers are rated between 167 and 500 KVA. At 240 volts, that equates to between 696 to 2083 amp, depending on the transformer. Whether it be a fuse or a crcuit breaker, it is not voltage that pops or trips them, it is current, specifically, overcurrent. I won't say that 110 volts at .5 amp will or won't kill someone, but I think that its far less likely than 110 volts at 100 or 200 amps on the customer side of a main, and far less likely than the 600 to 2000 amps that it takes to trip at the transformer back to the grid, again when factoring at 240 volts. Those are real numbers provided by a manufacturer, and they should scare people. Between the main and that transformer, 600 to 2,000 amps to trip that circuit breaker on the transformer that when pops, you see the power guy in a bucket truck using a 6' long or longer fiberglass tool to reset it for a reason. When thinking in terms of fuses or circit breakers, its not the voltage that pops or trips them, its the current. Current will most definately cause death. A typical static electric discharge from a human to ground is between 2,000 and 3,000 volts, and the reason that it doesn't kill, usually anyway, is because its low current.
Now, I don't doubt what someone else saying that the number of cycles having an affect that can change electric pulses within a human that can throw heart beats off and killing someone, but I also accept that current most definately kills. When you're welding whatever you are welding is grounded for a reason, to create a flow of current that will melt whatever you're welding. Its not to increase voltage, but to increase the flow of current between ground, and voltage which is constant.
Whether or not we agree on any of the above, other than turning it on or off, can we agree that messing around with a main circuit breaker in a power distribution panal is not something that a novice should be doing? Shouldn't it be performed by someone experienced at it? Someone that knows what they are doing? In general, Deere, Ford, Massey, Oliver and the rest of the tractor manufacturers aren't very good at that.
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Today's Featured Article - Talk of the Town: Winterizing Engines - To Drain or Not to Drain? - by Russ Berry. What is this strange attraction I have to equipment and machinery? How did I get this way? I came from the suburbs and own a small horse farm in rural Loudoun County, Virginia. You can call me a "weekend farmer." The local farmers do. Does it bother me? No. I am just happy to have their friendship. At least the word "farmer" is in my title. But what is the attraction? How can I explain the sensation and exhilaration I feel when I turn the key and hear the engine come to life (most
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