What does a 55 5 capacitor mean?

A dual run capacitor, such as this 55/5, combines two capacitors into one unit. It will power a compressor motor and a fan motor, and has three terminals on the top. They are labeled “Herm” for the compressor motor, “Fan” for the fan, and “C” for the common line.

Does start or run go to capacitor?

A Start or Run Capacitor can be combined into one capacitor called a Dual Capacitor with three leads, but can be split between two separate capacitors. The Start Capacitor gives a fan motor the torque it needs to start spinning then stops; while the Run capacitor stays on giving the motor extra torque when needed.

How do I know what size run capacitor I need?

Multiply the full load amps by 2,650. Divide this number by the supply voltage. The full load amps and the supply voltage can be found in the owner’s manual. The resulting number is the MicroFarad of the capacitor you need.

How do you tell a run capacitor from a start capacitor?

the start capacitor have a range of mfd, but the run capacitor has a accurate mfd. Run capacitor are filled with oil (for cooling and are totally sealed.

How do you connect a start and run capacitor?

Push the wire terminal on the start capacitor’s second wire onto the run capacitor’s common terminal, often labeled “C,” “COM.” The wire connected to the motor’s run terminal, marked as “R” on the motor’s wiring chart, and the wire going to the hot terminal on the load side of the contactor also connects to this run …

How do I choose a running capacitor?

Voltage: Select a capacitor with a voltage rating at or above the original capacitor. If you’re using a 370 volt capacitor, a 370 or 440 volt capacitor will work, though the 440 volt unit will actually last longer. A run capacitor will have a marked voltage indicating peak voltage acceptable – not operational voltage.

How can you tell a start capacitor from a run capacitor?

1) Run capacitors are rated in a range of 3–70 microfarad (uF). Run capacitors are also rated by voltage classification. The voltage classifications are 370V and 440V. Capacitors with ratings above 70 microfarad (uF) are starting capacitors.