How to Choose a Correct Sized Voltage Stabilizer?
Check the power rating of the Window AC apparatus that which you are going to be used with a stabilizer, by observing the nameplate details.
It is recommended to add a safety margin to stabilizer rating, typically a 20-25 percent.
Suppose if the air conditioner is rated as 1kVA. Therefore, the safe margin of 20 percent is 200 watts. By adding these watts to actual rating we get 1200 VA wattage. So 1.2 kVA or 1200 VA stabilizer is preferable for the appliance. For home needs 200 VA to 10 kVA stabilizers are preferred.