Engineering FAQ Guide
CCA Round Wire: Diameter, Resistance and Termination FAQ
What is CCA Round Wire?
aluminum core with metallurgically bonded copper cladding.
For CCA round wire, specify diameter and tolerance, copper proportion, resistance, tensile strength and elongation. Add the termination method and spool details. For high-frequency cable, include the operating frequency and finished-cable performance target.
Primary Applications
- communication cable
- coaxial cable
- lightweight wiring
- skin-effect applications
Critical RFQ Specifications
- diameter
- copper ratio
- conductivity
- tensile strength
- elongation
- packaging
Selection
Can CCA be sized from copper diameter alone?
No. Start with measured or agreed material resistivity and the required length and resistance at the same temperature. Then check available space, termination, thermal conditions and the applicable product specification. Equal diameter does not imply equal resistance.
Specifications
How should the copper fraction be stated?
Identify whether copper content is by mass, volume or cross-sectional area, and specify the measurement or calculation basis. These percentages cannot be exchanged without accounting for the material construction.
Testing
What is needed to evaluate a connection?
Identify the terminal, conductor dimensions, crimp or joining method, current profile, moisture, temperature and flexing. Check the exposed end or cut surface and test the complete connection. If the drawing requires copper, obtain the specification owner’s approval for a change.