Common in fans and AC systems for run or start functions. Example: 3-wire fan capacitor, CBB61 capacitor 3 wire. Wiring: Connect the wires as per the diagram; typically, the three wires are “Common,” “Fan,” and “Herm” (Hermetic compressor). 3. Wire Capacitors Found in more complex systems like AC units and heavy-duty fans.
These are simple capacitors with two terminals, typically labeled “+” and “-” or unpolarized for AC use. Example: CBB61 capacitor 2 wire. Applications: Ceiling fans or exhaust fans. Wiring: Follow the 2-wire capacitor wiring diagram provided by the manufacturer. 2. Wire Capacitors Common in fans and AC systems for run or start functions.
To wire a 3-wire AC dual capacitor, first identify the common (C), fan (F), and hermetic compressor (H) wires. Then, connect the common (C) wire to the common terminal on the capacitor.
A 3-wire capacitor is better than a 2-wire capacitor for a ceiling fan because it can be used for two different requirements. In this capacitor, one wire is common and between the common wire and the 2nd wire, the capacitance is different than between the common and 3rd wire. One thing more, in some ceiling fans, this type of capacitor is used for regulating speeds.
The 3-wire capacitor is better than a 2-wire capacitor because it can be used for two different requirements. In this capacitor, one wire is common, and the capacitance is different between the common wire and the second wire, compared to the common and third wire.
Wiring capacitors in general is stunningly simple, as described above on this page, as there are just two or at most three wire connections. We also describe how a technician uses a DMM or VOM to determine which wires on the motor are headed for the start winding and which for the run winding (measuring resistance).