You need a step-up transformer, to go from 110 to 220-240 volts. Then a 110 volt supply can operate 240 volt equipment.
You need a dedicated circuit for that. You cannot power a 220V device off 110V.
No India uses 240V at 50Hz the U.S. uses 110V at 60Hz.
One word: KABOOM.
no
If 240 power is supplied you can. Depends on power pole.
Check your laptops power adapter to see if it will handle both 240v(UK) and 110v(US) if it can handle 240v (which I believe most can) then all you need is a UK plug adapter.
You'll need to contact an electrician to modify the circuitry of your home.For some low power devices, you can purchase a transformer that will convert to 240V, but if you're using higher current you'll need to run a 240V circuit back to the breaker panel.Always seek the assistance of a qualified electrician for these types of modifications.
Using a box that is hire voltage than what you need can cause a short, and even a fire. So using a 240V box, when all you need is a 110v receptacle, wouldn't be a good idea.
Changing the plug will not change the power needed to run the saw. If the saw has a dual voltage motor then a wiring change can be done to switch the saw from 240 to 110 volts. If it is not a dual voltage system then the saw must be fed with 220 volts.
No
It would be better if you got a transformer and stepped up the voltage.
No. If the heaters are designed for 220V they cannot fun off of 110V. Also running a 1500W heater off of 110V would require a dedicated circuit. So four 1500W heaters would require 4 dedicated 110V circuits.