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How do you read a capacitor rating?
If you have a capacitor that has nothing other than a three-digit number printed on it, the third digit represents the number of zeros to add to the end of the first two digits. The resulting number is the capacitance in pF. For example, 101 represents 100 pF: the digits 10 followed by one additional zero.
What do the ratings on a capacitor mean?
The voltage rating of a capacitor is a measure of how strong its insulation is. A 35V cap can withstand at least 35 volts applied across it (a higher voltage may cause bad things like a short through the cap and burnup).
What do the numbers on a start capacitor mean?
The higher the voltage rating on your capacitor (or other electrical item) the faster the electrical current moves. The second rating is the microfarad (MFD) rating. That means the higher the microfarad rating, the more electrical current it can store. A typical capacitor can range from 5MFD to 80MFD.
What does the rating on a capacitor mean?
The higher the voltage rating on your capacitor (or other electrical item) the faster the electrical current moves. The second rating is the microfarad (MFD) rating. A microfarad is a term to describe a capacitor’s level of capacity. That means the higher the microfarad rating, the more electrical current it can store.
What does the microfarad rating on a capacitor mean?
That means the higher the microfarad rating, the more electrical current it can store. A typical capacitor can range from 5MFD to 80MFD. If you are looking at your capacitor and you can’t find the proper rating, it might also look like µF also. A few different types of capacitors exist, and they each have a similar, yet slightly different purpose.
What is the MFD value of a round capacitor?
If space is not a consideration, round and oval run capacitors of the same capacitance and voltage are interchangeable. They only have one MFD value on them with a + or – value after it. Example 30 MFD +/- 10%. When this capacitor was manufactured, it read somewhere between 27 and 33 MFD.
What should the voltage of a run capacitor be?
When this capacitor was manufactured, it read somewhere between 27 and 33 MFD. Some are +/- 5%, some +/- 6% and some +/- 10%, but they are interchangeable as long as the MFD value is the same. The voltage of a run capacitors is usually 370 VAC or 440 VAC in most motors and 250 VAC or 400 VAC in WEG Brand or some other foreign made motors.