Catalytic Converters
Home Electricity
Electrical Engineering
Break Dancing

Why can't you simply use a step-up converter to plug a 240V appliance into a 120V socket?

Top Answer
User Avatar
Wiki User
Answered 2009-04-16 02:08:56

The power rating on the converter won't be high enough. You cannot exceede the power capacity of the source, no matter how hard you try. In the US outlets are 15A at 120V. 15A * 120V = 1800W. No matter what you do, you cannot draw more power than that from the outlet. Also, you are limited by the weakest link in your chain. The next link is the converter itself. If you can get a converter with a power rating higher than your appliance, and the appliance draws under 1800W, then yes, you can power it with a converter. (Though, if it draws 1800W, or over 1500W to be practical, it will need a dedicated line.) So, for a small appliance bought overseas, yes this will work. For Ranges and Dryers, no it will not. There is a reason they are not designed to plug in to regular outlets. Range: 50A at 240V: 12,000 Watts max. 6.7x the amount of power a 120V outlet can supply. Dryer: 30A at 240V: 7,200 Watts max. 4 times the amount of power a 120V outlet can supply. The previous answer is not correct. Of course you can. There's absolutely no reason why it would not work. The outlet and the power source it is connected to has no limit as to the amount of power that can be drawn, for all intents and purposes. The current is artificially limited by the circuit's fuse/circuit breaker for safety reasons. Given sufficiently thick wire, the circuit can draw 50, 100, 200A with no problem. The reason the circuits are current-limited is due to the relatively thin wires between the power source and the outlet. Thinner wires heat up faster as the current passing through them increases. At a certain current level, the wire can heat up enough to be a fire hazard. A step-up transformer is simply wire wrapped around two iron cores. One side is connected to the 120V source (the outlet). The other side is connected to the appliance. The changing voltage on one side (AC) induces voltage changes on the other side proportional to the ratio of the number of turns of wire. This is basically the opposite of the step-down transformer connecting your house to the power grid. What would you use instead of a step-up transformer anyway?

User Avatar

Your Answer

Still Have Questions?

Related Questions

How do the transformer increase the voltage?

the transformer voltage can be increased simply by connecting the stepup transformer in series to it. the stepup transformer is nothing but its secondary windings should be more when compared to its primary windings.

Why are transformers necessary?

Transformers are necessary to stepup or stepdown voltage levels so that transmission of power is convenient. without stepup/stepdown voltage level according to our requirement losses will be very high and transmission and usage of power is not feasible.

Why not stepup transformer is not used in rectifiers?

Rectifiers turn A/C into D/C, but transformers can only run on A/C.

What is the function of the step-up transformer?

A stepup transformer increases the voltage to decrease loss of energy due to long distance transmission..

How a transformer is very useful in ac supply?

Transformer is the only device which is capable to stepup or stepdown an ac signal. That's why its used widely in ac supply.

What is stepup transformer?

A step-up transformer produces a voltage across its secondary winding which is higher than its primary winding. The secondary winding is connected to the load, while the primary winding is connected to the supply.

What is the main function of a step up transformer?

Step up transformer is a transformer (tf) which is used to step up the voltages.for example if we have low voltages in the generating side then we mostly use stepup transformer there.

Why not multiply Electrical power with stepup transformers?

Power is not multiplied by the use of a transformer. The voltage can be stepped up, but the current is stepped down at the same time so there is no gain in the power which is voltage times current.

Is it true that more men break womens heart everyday then women do?

Theres not a definite answer to that, but i'd say it's true. We women have to stepup and stop taking c... from men. We're just as powerful! You know you love me xoxo Gossip Girl

When you stepup ac voltage the current drops.What will happen with CURRENT if DC is stepped up?


What is transformer w?

Transformer is a electric device which it can be used for to transfer the ac current one circuit to another i.e. To reduces voltage and without frequency changing. Many types of transformer available in various purpose i.e. Stepup transformer, stepdowntransformer ,autotransformer ,,,,,,,etc answered by arivukkarasu.a

Which amplifier converts millivolt to volt?

to convert a 100mv to 1volt u will have to multiply it by 10. so u will need a stepup amplifier to do that. u can depend on am op-amp based amplifier to do it if u r allowed to use external supply, else u will need a transformer for the same. Ashish.K

What is the difference between step up and step down?

in transformers for instance a stepup transformer does exactly that, steps up the voltageAND/OR theamperage and a step down transformer reduces the same. if you have a machine that operates on say 120 volts alternating current single phase and your building or power supply in your buildingis set up for or delivers480 volts alternating current-three phase you will need a step down transformer to operate the machine.

Why stepup transformer uses ac?

Confusing question! If it is, why transformers use ac? Then it is, for induction there must be change in flux linkage which is possible with ac which frequently changes polarity. In dc there wont be any change. If que is, why step up is used? There will be considerable voltage drop with distant transmission. For this reason step up voltage is required with step up transformer. Since, in high voltages this drop is negligible or efficient transmission

Can you use a step up transformer on a 110 and safely power a cooktop that requires 220?

Generally,no, you can't. Most 110-volt outlets provide only a limited amount of current, normally in the range of 15 amps (maximum). In that case, the maximum power output of the outlet is about 1800 watts. Most 220-volt cooktops I've seen require twice to four time that amount of power, with some power requirements reaching 12 kilowatts (12 kw or 12,000 watts). But these large power users are mostly 36" induction cooktops.In the case of attempting to operate a 220-volt cooktop on an "standard" 110-volt electrical with a stepup transformer, the outlets you have could not begin to provide the required power. If you do the math, you'll find that even attempting this is a very bad idea. Consult an electrician for conformation. No professional electrician would even submit a bid to you to do this job (powering a 220-volt cooktop from a 110-volt circuit with a stepup transformer). They'd tell you over the phone that it isn't something that will fly past the electrical code.

Your daughter 15 and pregnant can the parents be in trouble?

well the parents wouldn't be in trouble unless the girl was very immature and irresponsible because she wouldn't be a very good parent. And because she might have like 9 babies because they will start getting addicted to haveing babys. But if she knows you know shes pregnant then sit her down and say "this is a big stepup in life for us and you because your gonna be a mother and you have to buy a house you have to buy the food the clothes and you have to have a proper education and that you have to have your own life you've gotta care for this baby you've gotta give him/her what he/she needs. GOOD LUCK!!!!!!! From:ILY2

What is the difference between inductors and transformers?

an inductor is a single coil used for its inductive reactancea transformer is one or more coils coupled by mutual inductance used for several purposes. some are.autotransformer or variac uses a single coil and provides stepup/stepdown without isolationisolation transformer uses two coils does not change voltage but provides isolationtransformers using many coils can provide a variety of different voltages usually with isolationsome transformers provide electrostatic shielding between their coilscurrent transformers use two coils to convert a current to a voltage to simplify measurementetc.

What is the difference between stepdown and stepup transformers?

A step-down transformer produces a secondary voltage that is lower than its primary voltage, while a step-up transformer produces a secondary voltage that is higher than its primary voltage. The primary voltage is the voltage applied to the transformer, whereas the secondary voltage is the voltage supplied by the transformer. It's the transformer's turns ratio that determines whether it is a step down or step up transformer: i.e. the ratio between the primary and secondary windings. If there are less turns on the secondary winding, then it's a step down transformer; if there are more turns on the secondary winding, then it's a step-up transformer.

How can you use the machine designed in us 460 v 60 hz in Europe with the voltage 400v and 50 hz the power of the machine is 36 kw?


How do you xxplain in a simple way function of stepup and step down transformer?

The function of a step up transformer is to step up the voltage given to it. For eg 11/32KV transformer steps up 11 KV to 32 KV. The function of step down transformer is to step down voltage For eg 420/230 V it steps down 420V to 230 V It does step up or down According to step up or step down ratio called transformation ratio k which equals to K=Ns/Np =Vs/Vp =Ip/Is ie ratios Ns:Np=Vs:Vp=Ip:Is=k Vs=secondary voltage Vp=primary voltage Ns=secondary number of turns Np=primary number of turns Is=secondary current Ip=primary current

How are step up and step down transformers used in the transmission of elecricity?

A stepup transformer steps the voltage up to a higher voltage for transmission over a long length of wire, the voltage used is about 1 kV per kilometre of distance as a general rule, so for transmission over 100 km you would tend to use somewhere around 100 kV.Answer for UK, Europe and countries running a 50 Hz supply service.After the energy has been transmitted it must be stepped down to a voltage that can be used. A small town in the UK might be supplied from a ring circuit at 33 kV which is then split down to several 11 kV circuits to be fed to small substations feeding groups of houses at 415 V 3-phase, with the line to neutral voltage providing 240 v single-phase supplies to individual properties. Those stages would use step down transformers.

How do you build a water turbine?

A simple principle.Water is pumped by way of gravity or mechanical means under pressure. A hand crank in this case.Water hits the fan blades and that turns a shaft which is a power source.And in this case it turns a simple generator which lights a red light.Tips: Use this principle to build your own to turn a car generator to generate DC current to charge batteries Or use a power inverter with the DC generator to make AC power Use a stepup transformer to power a DC water pump that turns the turbine Use as a DC power source for the Project "Canned Heat"---------------------------------------------------------------------------------------------Large scale hydroelectric power has been used worldwide for a long time to generate huge amounts of power from water stored behind massive dams. Small scale hydropower has been used for hundreds of years for manufacturing, including milling grain, sawing logs and manufacturing cloth. However, it can also be used without a dam to generate electricity for home scale remote power systems. These so-called micro-hydro installations can be a very good complement to a solar power system, as they produce electricity 24 hours a day. Waterwheels--It's important to differentiate between water wheels and water turbines. A water wheel is more akin the antique version we are all familiar with--a massive wooden wheel that slowly turns as the creek pours down over it. Water wheels spin slowly, but with lots of torque. They are also surprisingly efficient! One very good place to go for waterwheel information, kits and photos is The Waterwheel Factory.NEW 6/21/2004 --- Scotty's new homebrew hydro plant, using a Banki Turbine design built from scratch. The generator is a homebuilt permanent magnet alternator, very similar to our Brake disc alternators. In a Banki design, the water hits the vanes twice, once upon entrance and then again upon exit. There is only about 3 feet of head available at the site, and the system is producing about 2 amps at 12VDC, fed by a 4 inch pipe. Check out the page about it HERE. A while back, one of our neighbors constructed a water wheel generator using a squirrel cage fan, belt, pulley and surplus tape drive motor that produced a steady 1-2 amps of power, 24 hours a day. He used a natural dam (a log that fell across the creek years ago) to get the fall and to mount the generator on.

What need to change in a blown head gasket of 95 Toyota Previa?

If indeed it is a head gasket that needs to be changed, its fairly easy, a few tools you will need is as follows, Jack stands, floor jack,2-ton,Breaker-bar, torque wrench, 10,12,13,14, 17 mm 12 point sockets to remove head bolts. First off the engine does not need to be removed, you can do it right from the access cover over the passenger seat, and from underneath, things you do not need to disconect are front driveline, water pump and timing chain cover. First jack up the front of the car on your two stands with floorjack, get as high as your conforatable with, I also use the floor jack as a secondary support and do not rely on the stands only, then remove the passenger seat, and then the stepup rim covering the carpet at door entrace, then peel back the carpet to expose the access cover, remove all screws and cover plate, keep the bolts separate from others, I usally put the bolts back in there respective holes as not to lose them and some are not the same size so is good way to remind where they go. ok, now were onto the disconnect exhaust just past the header system, there are 3 bolts and two bolts connecting the mount, this is where the breaker bar will come in handy, you can use your leg to push back the muffler enough to break the system apart you'll need to separate it from the header, then move on to the header assembly and take out the 5 bolts and drop the header. ok lets remove the engine mount just at the front and at below the valve cover, theres 3 bolts that hold it to the block, and another two that you will loosen or take off, make sure you prop up the engine so as it does not but anythin in a bind, once all are taken off jack up the engine enough to pull this out, onec out, you'll have access to the other items that will need to be taken off, remove the timing chain tensioner, now lower the jack slowly and relive the load, take off the oil assembly line, two bolts attach it to the head, and two clamps will remove it, make sure your oil has been drained and your anti freeze sealant, you'll now have plenty room to reach in and above the engine to get to the intake, more later..ok, now you can move up to the access hole, and take off the spark plug cover to expose the valve cover, tape and mark your wires, hoses, and anything that requires taking off, if your not sure comfortable with removing the distributor then mark it as to where it is, or start from scratch with TDC I'm assumming you already know about this so will not cover it, once the distrib is removed you'll have better access to the egr valve and the two bolts that hold it onto the head, remove this and 2 bolts holding on the wire harness at the top of the head, now remove water jacket assembly from the head , two bolts at the top block, no need to pull it off just out of the way, leave the hoses connected to it, ok, now you'll need to disconnect the intake from the head, open your gas cover and release the pressure of the cap and leave it very loose, this will keep the gas from comming out the lines when you take apart. there are two intake brackets that the bolts will have to be taken out, there far back so a small ratchet and 13mm will do it, I only removed the top ones and left it at that, once those are removed take out the 6 bolts holding down the intake you may have to also take loose the bolts that hold down the wiring harness so that you can move out of way, you cannot take completely off so just keep moving aside as you need to, also disconnect the vacume hose to valve cover, and the gas lines, no need to taqke the injecter plate off, ok the intake should raise high enough to clear the bolts do not need alot, now remove the valve cover, and expose the two cams, here is where you'll need to follow in order a procedure outlinning the sequence of lossening the cam bolts, and then remove the bottom cam first, keep in order the bolts and the bearings that you take off, now, I think its a 17mm wrench take lossen the bolt from the front of the cam, make sure you slip something into the sprocket so that when taking bolt lose you do not stretch the chain or put in bind, at this poing you cannot take bolt out, but just lossen, ok same procedure on the upper cam for taking off, once loose you'll be able to take that sprocket bolt out and take sprocket off as well and set aside , again I am assumming you know how to have set it up for TDC for alignment on the timing chain and cams. you can now take the sprocket out and let the chain lie in the head. you can also at this time take out the valveshimes and keep in order as to where they go. you now have all the head bolts exposed, this is a 12 pointer socket, remember to take loose in the order it calls for so that you do not ruin the head, onec all the bolts have been taken loose as well as the two inside the timing area, do a double take and make sure everything is disconnected from the head, there will be some misc bolts that hold some lines to the intake that you might find easier to remove if you want. Take a pry bar and very carefully pry the head loose, just enough to break the seal, prop your floor jack up and under the head with a block of wood and continue to now take off the head, its very heavy in this position and the floor jack helps in doing it very slowly and carefull, no need to get in a hurry. Once out you'll see expose the pistons and head gasket, this is where the fun begins you'll need to clean all the gasket material from all exposed parts, intake, head or block, water jacket, egr, oil line assembly, There you have it, is good idea now to have your head checked for cracks etc, or do valve job.. to put back is the reversal of this order. here is link to get your head gasket kit for 38 dollars and is good kit. <A href="http://cgi.eBay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=130271354856&ssPageName=ADME:B:EOIBSA:MT:11">http://cgi.eBay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=130271354856&ssPageName=ADME:B:EOIBSA:MT:11</A> This is a good link for your assembly order and or lossening bolts on the cams and heads. <A href="http://www.justanswer.com/questions/1jhz-engine-removal-Toyota-previa">http://www.justanswer.com/questions/1jhz-engine-removal-Toyota-previa</A> I have step by step pics if your interested, e-mail me at <A href="mailto:mike@dalephill2.com">mike@dalephill2.com</A> P.S> do not forget to change your oil filter and add 5 quarts of oil, and your antifreeze, start her up and check for leaks and or water. and job well done

Still have questions?

Trending Questions
Unanswered Questions
Where is 5.9055118 on a ruler? Asked By Wiki User