Table
CU/AL Termination Markings and Compatibility
CU/AL Termination Markings and Compatibility lookup table with assumptions and boundary notes.
Scope
Terminal marking planning only. The actual equipment label, conductor material, torque value, and manufacturer instructions govern terminations.
Lookup table
Decode common copper and aluminum terminal marking labels used on equipment and devices.
Scroll sideways to keep row labels aligned with hidden columns.
| Marking | Meaning | Temp rating (C) | Boundary |
|---|---|---|---|
| CU | Copper conductor terminal only | 75 | Terminal marking planning only; equipment label and instructions govern conductor application |
| AL | Aluminum conductor terminal only | 75 | Terminal marking planning only; equipment label and instructions govern conductor application |
| CU/AL | Copper or aluminum conductor terminal marking | 75 | Terminal marking planning only; torque and conductor range still come from product data |
| AL7CU | Aluminum/copper terminal with 75 C lookup | 75 | Terminal marking planning only; use the actual equipment label |
| AL9CU | Aluminum/copper terminal with 90 C lookup | 90 | Terminal marking planning only; use the actual equipment label |
Notes
- Check table values for preliminary lookup and arithmetic checks only.
- Confirm equipment ratings, product markings, installation conditions, utility requirements, and the local authority requirements before design or field use.