Isolation is not your issue here!
If the overcurrent protection (breakers, fuses) are sized correctly, and the buildings wiring is sound, the A/C would not normally cause any other problem other than to trip its own breaker or fuse.
If an A/C unit is causing the buildings main breaker to trip, you need to have the electrical system for the building diagnosed and repaired.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS. If you do this work yourself, always turn off the power at the breaker box/fuse panel BEFORE you attempt to do any work AND always use a meter or voltage indicator
to insure the circuit is, in fact, de-energized.
It is on outlet of the High preasure side
It is on outlet of the High preasure side
Absolutely not.
You can plug the air conditioner into any outlet in your home, however you should get an outlet strip to protect against power surges. Yes, this HDTV plugs into a normal electrical outlet or power strip.
250 volts
wanting to recharge my compressor.
Yes provided it is installed to code. You also might want to mark it in some way unless the plug is of a different configuration than the standard outlet.
Make sure unit is plugged into working outlet.
Home Depot and Storage Marquees are well known companies that provide installation of a storage building. Other companies known for such thing are Lowe's, Mini Storage Outlet and Metal Building Outlet.
It could be the air conditioner went out simply at that time and it has nothing to do with the outlet. My guess is, however, that something went wrong in the wiring process and you need to find a competent electrician to check it for you.
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.
Absolutely not. The plugs are incompatible for a reason. The unit will be fried and a fire may result. Find a 115 outlet.