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greekislandlover

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Going to the US next year, and am going to hire an RV for part of the trip. Doing all the research at the moment, and am reading some forums on the topic.

One of the threads is where a lady managed to plug a load of 110v appliances into 220v and sh*gged the lot. My question is how is that possible to do? Surely 110 and 220 outlets are different shapes and colours to stop this happening as they are here?

From my understanding of the ensuing thread, in the US final circuits are fed from a centre tapped transfprmer and comprise of a neutral to the centre tap, and two 110v supplies from the transformer. So connecting between the neutral and each of the line connections gives you 110 but at opposite phases of the cycle, and connecting between the two lines gives 220 for dryers and welders and such. So if a neutral goes missing it's possible to get 220v by mistake, if some numpty doesn't know what he's doing you can blast appliances with double the voltage and so on.

So my understanding of the US electric supply is now confused. Anyone able to offer a proper insight into how it works over the pond?

I'm mainly concerned that I'll plug my rented RV into the wrong voltage socket and blow it up!
 
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mdshunk

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mdshunk

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