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Old 03-07-2015, 01:22 PM   #21
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Please explain why.
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Old 03-07-2015, 01:24 PM   #22
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ALL 50 Amp RV sources ARE 220 Volt. Thae fact is that the RV does NOT use 220 volt. The Busses in the distribution box are split, so each side gets 110 Volt. For this reason is why some people state that RV's are ONLY 110 Volt. So just for clarification, There IS 220 Volts coming into the RV but it is not utlized in that fashion.
Not to nit pick, but it's actually 120 and 240 volt... 110 volts stems from Edison's original DC distribution system, the last one of which was disconnected in November 2007...
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Old 03-07-2015, 01:27 PM   #23
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Fair enough. But it may depend on who's system your on and what they have the AVC's set at.
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Old 03-07-2015, 01:30 PM   #24
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Please explain why.
Why does a 240V 50A service fry a 50 rv plug? BombDoc and a lot of others have fried theirs by plugging into a 50A 250V receptacle like for a welder.
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Old 03-07-2015, 01:30 PM   #25
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NEMA 14-50R is wired the same (split phase) regardless of RV or residential use. In residential, it is actually the common receptacle for an electric range.
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Old 03-07-2015, 01:31 PM   #26
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Fair enough. But it may depend on who's system your on and what they have the AVC's set at.
What is an AVC?
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Old 03-07-2015, 01:39 PM   #27
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Can't answer about bombdoc's situation ect. without seeing the wiring configuration. The fact of the matter is a multimeter does not lie. If you measure the voltage as described above you WILL get the results as shown above if the source is wired properly. If you notice at campground power pedistals there is a single pole breaker for the 15 / 20 amp receptacle amd a single pole for the 30 amp. But there is a double pole for the 50. Thus the two seperate legs / polarity's which make up the 220 / 240.
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Old 03-07-2015, 01:41 PM   #28
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Why does a 240V 50A service fry a 50 rv plug? BombDoc and a lot of others have fried theirs by plugging into a 50A 250V receptacle like for a welder.
Getting way off topic, but anyone with a welder on residential service is wired the same way - split phase with two 120V hot legs.

Their problem with their RV service was an open neutral or ground so guess what happens on the return path - you get 220 surging/backfeeding the intact ground or neutral!

Conversely, you very much can mis-wire a 30A.
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Old 03-07-2015, 01:43 PM   #29
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AVC' are used in the power company's substations on the distribution transformers. Stands for Automatic Voltage Control. They control the operation of transformer tap changers, which move in response to system load. On heavy load days in the summer when supply's are limited a power authority may invoke a 5% voltage reduction, which helps the reactive resources on the system maintain levels. This is done by moving the settings on the AVC's.
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Old 03-07-2015, 01:46 PM   #30
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I do apoligize for getting off topic.
Back to the regularly scheduled program.
I would keep the appliances for parts. Better to be looking at it than for it.
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