MIL-C-55021 | NEMA WC 55021
The MIL-C-55021C covers electrical cables consisting of unshielded and unjacketed, shielded, jacketed, or shielded ad jacketed twisted pairs and triples, and shielded or shielded and jacketed singles. The cable is intended for internal wiring of electrical equipment for applications of -40°C to +105°C (M55021/1) and -65°C to +200°C (M55021/2). Cable constructed with PVC insulation or jackets are not to be used in aerospace applications.
| Wire Type | Conductor Size | Conductor Material | Color of 1st Wire | Color of 2nd Wire | Color of 3rd Wire | Covering Over Components |
|---|---|---|---|---|---|---|
| E | 24 | C | 901 | 902 | 9 | STW |
| Letter | Wire Specification | Letter | Wire Specification |
|---|---|---|---|
| B | M16878/1 | EE | NEMA HP3 (M16878/5) |
| C | M16878/2 | BJ | M16878/17 |
| D | M16878/3 | CJ | M16878/18 |
| E | NEMA HP3 (M16878/4) | DJ | M16878/19 |
| Conductor Size | Stranding |
|---|---|
| 26 AWG - 30 AWG | 7 Strands |
| 12 AWG - 24 AWG | 19 Strands |
| 10 AWG | 37 Strands |
| Conductor Code | Conductor Type |
| C | Annealed Copper |
| S | Copper Clad Steel |
| H | High Strength Copper Alloy |
| Code | Color | Code | Color |
| 0 | Black | 5 | Green |
| 1 | Brown | 6 | Blue |
| 2 | Red | 7 | Violet |
| 3 | Orange | 8 | Gray |
| 4 | Yellow | 9 | White |
| Letter | Covering | Letter | Covering |
| U | Unjacketed and unshielded | S | Shielded and unjacketed |
| P | Polyvinylchloride (PVC) Jacket | SP | Shielded and covered with a PVC Jacket |
| F | Fluorinatedethylenepropylene (FEP) Jacket | SF | Shielded and covered with FEP Jacket |
| J | Polyamide Jacket | SJ | Shielded and covered with a Polyamide Jacket |
| T | Polytetrafluoroethylene (PTFE) Jacket | STW | Shielded and covered with a wrapped PTFE Jacket |
| STX | Shielded and covered with an extruded PTFE Jacket |
