Yes, they are functionally the same.
Not only are they functionally the same, but they are truly one and the same thing. That which some people call a 110 volt line and what some call a 120 volt line are provide by the same equipment.
The difference in the name is based on what was the standard voltage at the time the person speaking learned what to call it. Presently, it is not uncommon to find 125 volts and 130 volts [and more] at a receptacle outlet. The upward ratcheting line voltage is the answer power companies use to address ever-increasing demand. For more information see the answer to the Related Questionshown below.
A solution may be a constant voltage transformer. They are designed to maintain a constant voltage, as their name implies. A variac or the like may also be employed, but they must be used with care. And they won't automatically adjust. If you are concerned about operating 120 volt appliances on 110 volt household circuits, you probably don't have to worry about it. The reason is that the voltage on the power grid is going to fluctuate in accordance with what plants are online and what the demand (the system load) is. We already know the voltage is going to be up and down a bit throughout the day. But appliances are designed to handle this and still work properly. A fan circulating air on a warm day doesn't care if the line voltage is 115 volts or 109 volts. It makes little difference to the appliance. Certainly a resistive heater won't get quite as hot on 110 volts as 120 volts, but it isn't that much. And if the line voltage should go down (should sag) to a certain point, the power grid is designed to disconnect sections of the distribution system to prevent damage. The undervoltage trips will shut things down until power can be restored. Your appliances are no longer powered up, but they were not damaged by undervoltage.
Do not do this.
Probably not, but I have yet to see a 150 volt appliance as this is a non-standard voltage. If you are referring to a 115 volt appliance then the answer is yes you can as 110/115/120 volts tend to be used interchangeably in practice and are close enough together to not affect operation of the appliance.
Only if it is rated for 110V-220V. If it is rated for 110V only and you plug it into a 220V outlet, your device will be destroyed.
If I understand your question, Can you run a 110 appliance off of a 220 volt outlet? You could by only using one leg of the 220. You may also consider changing the outlet. Put in a regular 110 outlet and capping off one leg of the 220 in the wall box. You still have a neutral and a ground to work with. I read this as the questioner doesn't want to modify the outlet. Check the voltage ratings on the device. Many electronic devices nowadays can havdle 120V or 240V as it is cheaper to manufacture one powersupply and sell it everywhere. If your device is rated for 240V, you can put a 240V plug on it. If it only says 120V, no dice. 240V will burn it up.
The easiest solution is to leave the 220V original outlet alone and plug the 110V dryer into a close 110V outlet, most likely the one for the washer. There should be nearby 110V outlets so you don't have to muck with rewiring the 220V outlet. A short heavy-duty extension cord is an option. I would also recommend killing the power to the old dryer outlet if it is unused. It cannot hurt. If you cannot plug the dryer into a nearby 110V outlet you can derate the 220V outlet down to a dedicated 110V outlet. This is not a task to be taken lightly if you are not experienced. If you do take this course of action yourself, buy a book. Do it right or don't do it at all. Negligence could kill someone.
Yes
You will burn up your appliance!!!!!
No. Attempting to run an appliance on insufficient voltage can cause damage to the appliance and can be dangerous. Call an electrician and get him to install a 220v plug
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.
Yes you can safely do this. Most appliances that are marked 115 volts will operate on outlet between 110 and 120 volts safely.
Do not do this.
Should be ok provided you do not draw too much current.
If it's rated at 110 then you can safely plug it in to a residential outlet. But, because it is generating heat, it will be drawing substantial voltage so you should ensure that the appliance is on its own circuit; otherwise when someone else turns on a light, or plugs in another appliance, the circuit will overload and shut down.
Probably not, but I have yet to see a 150 volt appliance as this is a non-standard voltage. If you are referring to a 115 volt appliance then the answer is yes you can as 110/115/120 volts tend to be used interchangeably in practice and are close enough together to not affect operation of the appliance.
A previous member answered: "No. You will need a step up transformer to be able to use 110v appliances in 100v sockets." This is incorrect. In the US, the AC supplied to household outlets may be called 100, 110, 0r 120 Volts. These all refer to the U.S. nominal 110 Volt supply, which can range from as low as 95 volts and as high as 125 volts and most appliances labeled for 110 Volts may be used in the socket. Generally, if the plug fits, it's safe.
For residential service 110V, 115V, 117V, 120V, and 125V are all functionally the same. Electric companies have been slowly increasing the line voltage over the last 100 years to cope with increased loads. That is where these different voltages come from. The tolerance is generally +/-10%. That's +/- 11.5 volts in this case. So, a 115VAC appliance will run between 103.5 and 126.5VAC. The short answer is yes. 110V appliances can work with up to 130V without being burnt, additionally, 220V appliances can work with up to 240V without being burnt.
If I understand your question, Can you run a 110 appliance off of a 220 volt outlet? You could by only using one leg of the 220. You may also consider changing the outlet. Put in a regular 110 outlet and capping off one leg of the 220 in the wall box. You still have a neutral and a ground to work with. I read this as the questioner doesn't want to modify the outlet. Check the voltage ratings on the device. Many electronic devices nowadays can havdle 120V or 240V as it is cheaper to manufacture one powersupply and sell it everywhere. If your device is rated for 240V, you can put a 240V plug on it. If it only says 120V, no dice. 240V will burn it up.