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| 83 Volts RMS; Hot Weather and Old Lines | |
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| Tweet Topic Started: Jun 22 2016, 05:04 AM (774 Views) | |
| Neutral | Jun 22 2016, 10:01 AM Post #41 |
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Fire & Ice Senior Diplomat
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I realize that but they will still work. Hardly a brownout. |
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| Berton | Jun 22 2016, 10:02 AM Post #42 |
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Thunder Fan
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Strange, when I google brownouts in CA I can't find any mention of old wiring being the problem. |
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| Thumper | Jun 22 2016, 10:27 AM Post #43 |
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Fire & Ice Senior Diplomat
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What kind of meter you talking about? What is a cheap meter. RMS value of a alternating sinusoidal waveform would be the same voltage as a direct current voltage to do the same resistive heating. |
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| Thumper | Jun 22 2016, 10:37 AM Post #44 |
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Fire & Ice Senior Diplomat
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Google again Berton. Over stressed electric grids are a cause of brown outs just as a generator station inadequate output is. |
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| Berton | Jun 22 2016, 10:55 AM Post #45 |
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Read again Thumper, I didn't say electric grids could not cause a brownout, I said I could not find a article saying the grid was the problem in CA. If you can find one I would appreciate it. |
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| Corky52 | Jun 22 2016, 11:01 AM Post #46 |
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Fire & Ice Senior Diplomat
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Thumper, Most meters read a peak voltage AC, 108 volts RMS generally reads about 120 volts on meters not specified as being RMS. There are times RMS is much better, but most times the peak is just fine. The lines are old as in designed earlier for a lower demand period of time, not as in being worn-out. Copper does not wear-out when carrying power. Feeding two hundred and sixteen houses from a grid feed designed for ninety houses pushes the limits.
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| colo_crawdad | Jun 22 2016, 08:18 PM Post #47 |
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Fire & Ice Senior Diplomat
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Last night I checked with a brother in law who has worked in electricity all his life and a nephew who has done the same work. Both are very knowledgeable and both support what Corky has posted. BTW, both live in Oklahoma. |
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| Berton | Jun 22 2016, 08:25 PM Post #48 |
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For the first time since January, rolling blackouts were ordered in California today, turning out the lights in approximately 500,000 homes, including some in Beverly Hills. Officials at California's Independent System Operator (ISO), which monitors the state's power grid, called a Stage Three alert at midday because of increased temperatures, a higher power demand and a lack of electricity from the Northwest. Further complicating the situation was the closure of two power plants. One was offline for maintenance and the other was shutdown due to unpaid bills, the officials said. Yesterday, the ISO ordered Pacific Gas and Electric and Southern California Edison, two of the state's biggest utility companies, to cut a total of 500 megawatts of electricity, enough power for roughly 500,000 homes. ISO spokeswoman Stephanie McCorkle said the outages were split between Northern and Southern California. A spokesman for Southern California Edison said the blackouts affected the Los Angeles-area cities of Chino, Beverly Hills, Long Beach, Visalia, Banning, Kern and Santa Monica. http://abcnews.go.com/US/story?id=93795&page=1 Edited by Berton, Jun 22 2016, 08:26 PM.
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| Thumper | Jun 22 2016, 10:24 PM Post #49 |
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Fire & Ice Senior Diplomat
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Cork, I think you are mistaken. Most meters read RMS Vac. House voltage is generally about 120 Vac rms. For peak, multiply by 1.414 the inverse of .707. Peak to peak house voltage is around 170 V. |
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| Corky52 | Jun 23 2016, 03:09 AM Post #50 |
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Fire & Ice Senior Diplomat
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Thumper, Sorry, I blew it, I used peak when I meant average. Most volt meters read some form of average voltage, depending on the actual waveform, unless specified as being RMS values. RMS times 1.1 is usually considered typical for most conversions.
Edited by Corky52, Jun 23 2016, 04:41 AM.
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