A: Typically you can expect 10 to 20 % variation in value
This depends on the application. It may be OK to do so, or it may result in problems. If this is an already designed circuit, and you have a 820u cap that has blown, I suggest replacing with a 1000u (in my experience, this is more common and readily available), AND i usually up the voltage rating on the cap. Capacitors typically blow due to overvoltaging or reverse polarizing them. If they've blown before, it's likely you'll have similar problems again, which is why i go with bigger, and higher voltage rated. I hate reduing things repeatedly.
35mfd
35mfd
No. The capacitor will short out and possibly explode. On the other hand, the 440 Volt Cap can be used in a 220 Volt circuit.
Yes, the higher voltage is not only OK, but is desirable, as it will be longer-lasting. It is very important to replace the capacitor with the same type. If it is a ceramic disk, replace it with a ceramic disc. If it is metal-film, then replace it with a metal-film capacitor, and so on.
A: Its purpose is to correct the power factor of the line.
220
Not all capacitors can be used for 220V; There are capacitors that are specially designed to withstand such high voltages.AnswerThe voltage rating of a capacitor is normally expressed as a d.c. value. If you want to use it on a 220-V a.c. system, then you must take into account that 220 V is an rms value, so you must determine its peak value. The peak value of 220 V (rms) is 311 V. So your capacitor must have a rated value in excess of 311 V d.c., or its insulation will fail.
No. It would have to be wired for 220 volts and would have to be rated for 220 volts and would have a different configuration so that a typical 120 v plug wouldn't fit the outlet.
242 ohms INCLUDES initial tolerance assuming no thermal drift aging etc
Yes it can. It is within the normal voltage / HZ tolerance.
Do you have a dual capacitor that starts both the compressor and the fan motor? You need 230V to power the compressor. You should have one wire from the capacitor going from the start terminal on the compressor and one going from the common terminal to common on the capacitor.