no you must run a dedicated line
Yes, with a caveat. The current ratings must be the same, the the 110V outlet must be a dedicated circuit, i.e. nothing else on that breaker. You can safely upgrade a dedicated 110V 15A circuit to a 220V 15A circuit by re-using the same wiring. You will have to just replace the breaker and the outlet. You cannot, however, increase the current load or have a 110/220V (4-prong) outlet. Note that if you move a non-dedicated circuit up to 220 you will start a fire.
I read this question as " I spent alot of money on a hot tub and I want to save money on the installation, so how cheaply can I endanger my family to impress them?" Call a professonal!!!...pkazsr
You cannot use 2-120v outlets to power a 240v dryer. You can convert a 240v dryer outlet to power 2-120v outlets if they are supplied with a neutral. This requires a competent electrician. Do not do this yourself.
If you need to ask, you should have someone who knows how do it....
you get an adapter
Disregard the neutral
You will burn up your appliance!!!!!
Off hand no but your explanations are not clear as to who is doing what to whom,,
If the 220V circuit is dedicated, is to derate the circuit to a dedicated 110V outlet. Replace the 220V breaker with a 110V breaker and install a 110V outlet in place of the 220V outlet. If the original circuit was 20A or greater go with a 20A breaker and a 20A outlet as Airconditioners are fairly large loads. Do not exceed the current rating of the old circuit as that is all the current the existing wiring can handle.
Yes, but you will only get one quarter of the wattage from the heater.