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what is the difference of 208 volts, 220 volts, 230 volts, 240 volts, and 250 volts.?

17 Answers

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  • Anonymous
    1 decade ago
    Favorite Answer

    there is really no such thing as 220,230 or 250 in america. You get 208 out of a wye transformer and 240 out of a delta transformer. An appliance such as a dryer will run on either of the voltages

  • 7 years ago

    208 volts is the high leg voltage, measured from the centre-taped neutral on a 240 volts 3 phase system to the blue wire. This is a unique US system. 240 is the voltage across the 2 hots of a 120 volt split phase supply. 250 is the connector rating. 220 and 230 are approximations of 240 volts (as 110, 115, 117 and 125 are to 120 volts).

    Outside North America (EU, UK, AUS, NZ, South Africa and India) the official (phase to neutral) voltage is 230 volts, with variations of 220 volts on most of mainland Europe, and 240 volts in the UK and much of the Commonwealth. Some locations had 250 volts. This is similar to the 277 / 480 volt industrial power, but with a phase to phase voltage of 380, 400, 415 or 433 volts. This system allows one system for residences, street lighting, commercial, light industrial, and agricultural locations. It also means that 50 residences might be powered from a single 3 phase transformer mounted on a pair of closely spaced poles.

    Source(s): Electronics Technician and Ham.
  • Anonymous
    6 years ago

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    what is the difference of 208 volts, 220 volts, 230 volts, 240 volts, and 250 volts.?

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  • Anonymous
    5 years ago

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    Good Lord...I'm not even going to say anything... Standard appliance ratings allow for a 10% +/- on voltage. This means, something that is rated to run on 240 volts can run on 10%, or 24 volts in this case, more or less. 240 - 24 is 216, obviously not within the 208 volts you say you have. 208 volts does come from a three phase system. However, just because that is the building supply doesn't mean you have three phase in your apartment. Oft times, three phase power is brought in in order to run mass quantities of motors more efficiently. You still only have 2 phases in your apartment which may give you 208-215 volts. Will the oven run on it? Yes. Will it slightly reduce the output of the burners? Only a little. Will you notice it? No. Hope this helps.

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  • dearth
    Lv 4
    4 years ago

    208 Volts

  • 1 decade ago

    208 volts is commonly found in commercial and industrial services. 220 is what untrained people call our 240 volt house services. 230 volts is a common motor voltage rating that will be installed on 240 volt services. 250 volts is a common plug and receptacle rating which will be used on 240 volt circuits.

    So the only two actual voltages in your list to be found in the USA is the 208 and the 240.

    In the USA, what we refer to as low voltage:

    600/360 volt 3 phase in commercial locations

    480/277 volt 3 phase in commercial and industrial locations

    208/120 volt 3 phase in commercial, industrial, and some residential locations

    240 volt delta 120/208 volt uncommon now in industrial locations but still found

    240/120 volt single phase in residential locations

    Source(s): I'm an electrician
  • Anonymous
    7 years ago

    Will a well pump that is 230 volts hook to 220

  • 1 decade ago

    For practical purposes, not a lot. An appliance with any of those ratings will run on a supply at any of those voltages. In fact, supply voltage can drift by a few tens of volts from the quoted figure anyway, especially in rural areas, so appliances are designed to cope with that. Also, most appliances are shipped to multiple countries, with different supply voltages.

    A 100-120V appliance won't work on a 220-240v supply or vice versa though, the difference is too big.

  • Anonymous
    6 years ago
  • 1 decade ago

    I agree with what Becca said and all except the last sentence of what Bwomj said. Just "the difference in voltage" has nothing to do with it. 220vac uses 2 hot phases to attain that voltage. 120vac uses 1 hot phase plus a neutral to get it's voltage.

    edit: Oh, and DH, I LOVE that movie!!

    Source(s): Journeyman Electrician 27 years
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