What would you like to do?
Yes, but I do not know of an adapter per se. Expose your 220V power lines. There should be two hot wires (black and red). They can technically be split apart and wired to two separate 110V outlets, but the neutral wire would have to be shared (not split, shared), same with the ground wire. Don't do this. It is a hack and doesn't meet code. Just run the right wire.
36 people found this useful
Was this answer useful?
Thanks for the feedback!
The reason that 120v service was chosen, was economic. Originally electricity was delivered to homes, and most businesses, for a single purpose and that was lighting. Can open…ers, TVs, washers, dryers, electrical factory machinery, etc. came later. At the time the most cost effective form of light bulb was a carbon filament bulb that operated best (optimally) at 100v to 110v. This, adjusted for transmission voltage drop, set most supply lines at 120v. Supplemental and Related Information: By the time cost effective, and higher voltage, metal filament bulbs were brought to the market, most of the cities in the USA were already running 120v supply lines. Europe was just starting such systems and opted for higher voltage supply lines. Higher voltages are used for long distance transmission and power distribution because more power can be transferred over the same size wire at a higher voltage (lower current). Power generation plants often use voltages in the hundreds of thousands, 115,000 to 165,000 of volts to move power over long distances. For lines of up to 20 miles long around a city, 2400 volts works well to reduce the voltage loss in the wires. In North America, the electrical power lines going to residential streets and roads are operated at a primary voltage of 7200 volts. This voltage (12500/1.73 = 7225) is one leg from a three phase 12500 volt primary line. On the secondary of the transformers it is center tapped to provide 120 volts from each 240-volt leg to the center point. The center point is electrically neutral. The actual measured voltage in your house receptacle circuits will normally be 110 to 120 volts. All appliances are rated for the minimum operating voltage (110-115). This is the cause of confusion about the actual level of the supply voltages. Different nominal voltage level and frequency standards are used in different countries. Europeans - and many other countries around the world - use 50 Hz (cycles per second) as the alternating frequency, not 60Hz as is used in North America and, again, many other countries around the world. The reason to use a higher voltage is that it is more economical because the current is less, so the wires can be smaller. On the other hand, the reason to use lower voltage in homes is safety: the lower the voltage, the safer it is. If you have 10 amps drawing on one leg of your 240/120 service, and 10 amps on the other leg, the I2R losses are one fourth what they would be if you had 20 amps on just the one leg. The Europeans use 415/240 (415/1.73 = 240), so their I2R losses are 1/16th of our 120 volt losses, with 20 amps drawing on just one leg. 480 V center tapped (split phase) is used in the UK only rarely, typically in rural areas to supply an isolated small group of houses that can be fed off a single phase overhead spur. Most houses and small businesses are supplied with 240 V single phase taken from a 415 V three phase local system, fed from a transformer of up to 700 KVA connected to the 11 kV distribution system. The voltage is mostly 240 V but is nominally described as 230 V with a suitably wide tolerance, to comply with European standards. Originally, the service voltage was about 90 volts direct current, which was Edison's plan. Tesla proposed that the electrical grid be alternating current (AC) and competed with Edison for the first generating plant to be built in the State of New York at Niagara Falls. Edison proposed a DC system and Tesla an AC system. History tells us that Tesla won the competition, and because of that the industrial revolution was quickly accelerated. Had Edison won we would probably still be in the dark ages because of the inefficiency of transmitting DC current over long distances. While Edison was promoting the electrical light bulb around the country, almost every town required its own generating station because DC would lose so much in the transmission that it became unusable after only a couple of miles. Tesla also had invented the poly phase alternating current generators that provided for the ability to generate the voltages necessary for long distance transmission. Tesla kept the voltage about the same as what Edison started but raised it to the 110 volts alternating current (VAC) because of the higher related voltages of 220 VAC and 440 VAC, which were integral to the more efficient poly phase generators. The standard voltage available in most parts of the country (US) is now nominally 120 VAC volts +/- 10%, and can vary from 108 VAC to 132 VAC. It's usually around 117-118 VAC. Transmission distances, the actual power needed in a neighborhood, cost, efficiency and safety issues dictate service parameters. Common distribution voltages run up to 16,000 volts. 12,000 is very common but there is still a lot of activity adding on to legacy distribution grids at lower voltages. A 2400 volt primary is very low for a distribution transformer. In actuality power transmission is over many miles and the transmission voltage is more then 110kV. In fact interstate transmission is in the range of close to 500kV. At a substation it is reduced to 16kV for local area distribution. Transmission for the whole of the grid in North America is all tied together . Why? For economy and reliability. For example in the Summer some states do not use air conditioning but in Las Vegas, Nevada they do, so they actually buy the power from Canada in the summer because it is cost effective and reduces the need for more generation plants. Even then reserve spin power must be sustained for peak demands. Because power plants cannot produce near instant acceleration to meet new demands. In many cities and other peak demand areas, specialist peakers work to ensure that the the integrity of the grid is always maintained. 240 v is standard for the USA but only one phase is used and the transformer center tap is grounded, making it safer. Also, the main frequency of 60 Hz produced by power generation is not as stable as some people think. It varies throughout the day as loading changes but the controllers must legally ensure that it averages 60Hz over a complete day so that electric clocks using synchronous motors remain accurate.
for USA, Canada and countries running a 60 Hertz supply service. The question asks "Can you convert an existing 240V plug to a 120V plug.?" ,Missing is the purpose of th…e 240V plug. Is it a Euro Hair Dryer, or a Stove Plug for a 2000W oven? A1: IF it is for a Universal Power supply for electronic equipment, YES it can, as long as the equipment can work with 120V and less than 12 Amps of current. (12 Amps is 80% of a 15 Amp Circuit-That is the Limit of Power through the Wiring). If you need more power (Tim Allen from Tool-Time comes to mind,) then you need to contact an electrician to string new wiring to the outlet. A2: IF it is for a specific piece of equipment that needs 240V to run, (Stove, Dryer, Welder), then NO, you cannot 'convert' the existing 240V plug. A3: IF it is for a 'Euro' appliance (Less than 1000 Watts power), IF the frequency of the motor is for 50 Hz, NO, as the speed rating depends on that frequency. A4: If its for a HDTV or similar appliance, NO, as the appliance is made to work in those countries where the 240 plug works. Adapers are available for the power supply, but for Region DVD players, it will not change the region you are in. A5: IF it is for an incandescent light fixture, YES, the plug can be converted, as long as the current to the lamp does not exceed the wiring. Typical lamps in North America are designed for 60W lamps, They consume 60W of power when operating, at 120 Volts, and have 1/2 ampere of current in them. 18 Gauge AWG wiring is used for lamp cord as a minimum to handle the current. IF its a EURO lamp, designed for 60W bulbs, at 240V, it will only handle 1/4 Ampere current, and USING a 60W light bulb is TWICE as much as it is designed for. IT would work at 30, but IT IS NOT RATED for 120V service. If your house burned down, the insurance would not cover the fire because the lamp is unapproved for use in North America. 5 different scenarios, 2 will work, 3 will not. Generally you would plug the correct appliance in the correct socket in the correct country of purchase. Do this electrical work only if you feel confident that you can do it safely. If not then this is the procedure that an electrician would use and you would be able to follow what he is doing. Again an electrician should be your first choice. This answer assumes that the old receptacle was 15 or 20 amps and the new receptacle will be 15 amps. If you consider doing this the first thing is SHUT THE MAIN BREAKER OFF. Use an auxiliary light source to see when working in a dead panel. Always keep in mind an ARC FLASH ACROSS HOT MAINS HAS ENOUGH HEAT TO PEAL THE SKIN OFF OF YOU. Before an explanation of how to do this you should keep in mind that this is for a single receptacle only. If any other receptacles are on the same circuit they will also be changed to 120 volts. That said OK, any 240 volt outlet can be changed to 120 volt by removing the white wire from the 2 pole breaker and inserting it into the neutral bus bar. Remove the other wire (probably black) from the breaker. Remove the 2 pole breaker from the breaker panel. Install two single pole 15 amp breakers into the hole left by the 2 pole breaker. Leave both of these breakers turned off. Connect the black wire that came off of the 2 pole breaker on to one of the new single pole 15 amp breaker. Re install the cover to the electrical panel, this end is finished. Remove the existing 240 volt receptacle and install the new 120 volt receptacle. Materials can be purchased at local building supply store. Remember to take the electrical panel data with you so you have the information for the 2 new breakers. Once you have the receptacle installed, identify on the electrical panel door what the breaker is used for. Leave the unused breaker in the off position. Turn the main breaker back on. Test the new receptacle with a lamp to make sure every thing is OK. yes, you have two hot lines in a 240 outlet (!!!in North America!!!), disconnect one of them from the breaker box change breaker to a single throw and wire in new outlet It may not be as simple as above. Is the old wire heavy enough for the new circuit? You cannot increase the current rating above that of the old circuit, but you can decrease it safely. How many wires are there? If there are 4, you will have an unused hot. If there are 3 you need to switch one hot to be neutral to your new outlet. Anyways, you need to: Get a new outlet you wish to install (based on wire size) Get a new breaker correctly sized to the outlet. !!!Get a new breaker correctly sized to the CONDUCTOR!!! A breaker protects the conductor, not the outlet. Although the two go hand in hand, a rule of thumb is to size the breaker based on the wire, or vice-versa(load). (eg, (CEC) #14=15A, #12=20A, #10=30A) Remove the old breaker. Wire the black hot wire to your new breaker. If the other hot was a red wire and there is a neutral(3-wire), cap the red wire with a wire nut. If there is no neutral the old, unused hot needs to be connected to the neutral bus. (If for some reason you don't have a white wire (like you have a red-sheathed run of heat-ex) wrap the new neutral with white tape (and only really do this if the wire is larger than #6). If for some really strange reason you have two black wires STOP. You won't be able to tell which is which at the other end and need to pull new wire. or hire an electrician to meter it out) If you have an old neutral wire check that it is tightly connected to the neutral bus. Now the circuit is wired in the panel for 110V. Leave it off for now. Replace the old 220V outlet with the new 110V outlet. If you had to mark wires with tape in the panel do the same here. Smoke test! Turn on the breaker and see if it works. If it does, good job. If it doesn't, turn the breaker off and test your work.
Not advised Some appliances may work, but I imagine most would either blow a fuse or just burn out. Definately not advised unless you use a transformer. With th…e right transformer everything should work fine.
Answer Hi, They're shaped differently, so probably not. Besides, plugging in a 120 volt device into a 240 volt power source would be disastrous to the device a…nd not a good idea. Hope this helps, Cubby
i think you just have to change the breaker from a 277 to a 120. 277 breakers are usually a 2 pole breaker and 120 is a single pole breaker. NO. 277v is not two poles, it is o…ne pole, one single pole breaker in a 480 volt 3 phase system (typically). If you want 120 volts from a 277 volt source you need a step down transformer 277 volt to 120 volt , or 480/277 to 120/208 .
You can, but your circuit will be "protected" by a 30 amp breaker. So you'll have to consider the safety issues of having wiring and appliances that can draw up to 30 am…ps before tripping the breaker. Will the wiring and circuity support that much current without damage? If not, then switch to a 15 or 20 amp breaker.
How do you convert a 120V receptacle to a 240V receptacle for a European stereo system that uses 230V if the Stereo has no toggle switch to 110V like some units on the market?
You can't "convert" a 120V receptacle into a 240V receptacle. A proper new 240V branch circuit complete with correctly sized circuit breakers, wiring and socket outlet is re…quired. For more information see the Related Question shown below. As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed. Before you do any work yourself, on electrical circuits, equipment or appliances, always use a test meter to ensure the circuit is, in fact, de-energized. IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB SAFELY AND COMPETENTLY REFER THIS WORK TO QUALIFIED PROFESSIONALS.
There are 110 volts going to recepticles along the walls ect. These are for lamps, vaccuum cleaners, most things besides stoves, dryers, heating and cooling(most). But t…he only way to use your 110 volt outlet for a 220 is to combine 2 110 volt legs to make it 220 volt. Then you neeed to make sure your breaaker is capable of the increase.
How can you wire a 110V plug outlet from a 240V plug outlet not speaking of a converter but actually changing the plug outlet so that there are no long term effects on the 120V appliance?
Assuming the wiring to the outlet has 2 loads and one neutral, isolate one load from the outlet and use the neutral as the common. be sure to ground from the receptacle …to your conduit or ground lead. You should also replace the corresponding breaker with a 120 volt single breaker.
In the US, it is between 110V Min and 120v Max
You need a step down transformer. A transformer that will step 240 volts to 120 volts. Check with Radio shack or your local electrical supplier. This saw draws 15 amps wh…en it is running (1800 watts). It will draw close to 30 amp instantaneous when it starts. The transformer that you will need, should have at least a 2KVA rating. Even better a 2.5KVA.
yes, but make sure the wire is #12 thhn Thhn is expensive and used in lighing and settings where temperatures can be high, normal house wiring is standard… and for twenty amps # twelve (12) is needed as well as the plug which is probably a 15 amp plug. Don't forget to change that or you can burn it out by overloading it with twenty amps. The whole circuit must be consistant from the main power panel to the plug. As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed. Before you do any work yourself, on electrical circuits, equipment or appliances, always use a test meter to ensure the circuit is, in fact, de-energized. IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB SAFELY AND COMPETENTLY REFER THIS WORK TO QUALIFIED PROFESSIONALS.
An existing outlet can be converted by replacing the 30A circuit breakers or fuses in the circuit breaker or fuse box with 15A breakers or fuses. The 30A outlet should also be… replaced by a 15A outlet. This is all that is required if the wire from the supply to the outlet is 10, 12, or 14 guage. The existing wire should be 10 guage wire to handle the 30A and there will be no problem in the same wire providing the 15A.
Answer for USA, Canada and countries running a 60 Hz supply service. To run your air conditioner you must run a new circuit for 240 volts including the correct size breakers,… wiring and receptacle. You can keep the existing 120 volt branch circuit and receptacle for other appliances. As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed. Before you do any work yourself, on electrical circuits, equipment or appliances, always use a test meter to ensure the circuit is, in fact, de-energized. IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB SAFELY AND COMPETENTLY REFER THIS WORK TO QUALIFIED PROFESSIONALS.
How can you convert a 3 prong 240V appliance outlet to 120V without rewiring and replacing the outlet?
If you need to ask, you should have someone who knows how do it....
Someone has wired 240 volts into your 120 volt outlet. If you have 240 volts you need a specially configured outlet so that a standard 120 volt plug cannot be inserted. If you… have this situation you would see 120 volts to ground and not neutral. Sometimes if you don't look carefully an outlet will look like the standard 120 volt variety but it isn't. One of the slots is horizontal and not vertical although there may be a small vertical split. 240 volts doesn't just magically appear. What you are describing is on purpose. If it really is 120 volt receptacle you need an electrician to put in the proper receptacle or re-wire the circuit.