France uses 220-240 volts for their electrical system.
Yes, 120 and 240 volts can be run in the same conduit.
In North America a two pole breaker will be used in the distribution panel for a supply of 240 volts for a 240 volt load.
240
AC voltage conversions are usually done with transformers. Most commonly, a 3 phase 277/480v system is transformed to a 3 phase 120/208v system. You can, however transform to anything you like with the proper transformer. If you are trying to convert 480v single phase to 240v single phase, such as for home use, then ask for that type transformer. It would use only 2 phases of the 3 phase system. Using 2 phases is called single phase and there are reasons for this that are beyond the scope of this answer. 220v and 110v are field measurements of what is considered 240v and 120v when ordering equipment or applying code.
No, you cannot simply change the wall plug to make a 110 volt outlet support a 240 volt appliance. The voltage requirements of the appliance and the outlet must match for safe operation. You would need to install a dedicated 240 volt outlet and ensure that the wiring and circuitry can handle the higher voltage. It is recommended to consult a licensed electrician for this type of electrical work.
The pin configuration of the 240 volt receptacle is different from a 120 volt pin configuration. This is a safety factor to prevent the wrong voltage being applied to the wrong devices.
The appliaance is designed for 110-120 v so if it is fed at 115 v that is quite OK.
Yes
No, you cannot use a 240-volt Henry Hoover on a 110-volt power supply as the voltage difference is too high. Attempting to do so can damage the appliance and pose a safety risk. It is important to always use appliances with the correct voltage rating to ensure safe operation.
no
An adapter can be used. Make sure that the adapter that you use is of a capacity that it can produce the amperage that your appliance needs. An adapter too small will burn itself open and will be of no use to anyone. Remember; Watts = Amps x Volts.
Yes this can be done. You need to look on line for a travel converter.
120/240 volts is the working voltage in North America.
It won't run.
Yes provided that you use a transformer that will transform 110 to 220/240. Without the transformer you will blow your equipment. You can take a USA appliance and go to Europe and other places that use 220/240 and use it but only if you have a transformer that is in range with the power consumption of the 110 equipment. Most small/portable electrical equipment like computers, tablets or phones bought in the USA are now coming with dual voltage 110/240, so there is no need for transformers. If you equipment does not says 120/240 or 110/220 you WILL need the transformer.
You need a step-up transformer, to go from 110 to 220-240 volts. Then a 110 volt supply can operate 240 volt equipment.