M27500 Cable (NEMA WC27500)
This specification covers the requirements for electronic control cables used in aircraft and missile applications. These cables may be constructed from a variety of insulating materials having different characteristics. These cables can be obtained in configurations up to 15 conductors with just a shield, or just a jacket, or both single and double shields and jackets. Conductor colors are specified and the cable must be identified by methods described in the body of M27500.
| Specification Number | ID method of cable wire & shield coverage | Conductor Size | Basic wire specification | Numbers of wires in cable | Shield style & materials | Jacket Material |
|---|---|---|---|---|---|---|
| M27500 | - | 22 | SD | 3 | T | 23 |
| Color Code for Shield Coverag 85% | Color Code for Shield Coverag 90% | M27500 Terminology | Component Wire Identification Method |
|---|---|---|---|
| - | C | Preferred method, Table A | White wires with colored stripes –stripe color per Table A |
| F | G | Preferred method, Table B | White wires with colored stripes –stripe color per Table B |
| A | D | Optional method A, Table A | Solid colored wire – colors per Table A |
| G | J | Optional method A, Table B | Solid colored wire – colors per Table B |
| B | E | Optional method B, Table C | Wires are the same color, based on AWG size (per Table C). Bands of contrasting color denotes wire number (per Table D) |
| K | M | Optional method C, Table C | Wires are the same color, based on AWG size (per Table C). Numbers of contrasting color printed to denote wire number |
| L | N | Optional method B, Table D | White wires with numbers of contrasting color printed on each wire to denote wire numbe |
| Wire Number | Color | Wire Number | Color | Wire Number | Color |
|---|---|---|---|---|---|
| 1 | White | 6 | Black | 11 | Blue/Blue |
| 2 | Blue | 7 | Yellow | 12 | Orange/Orange |
| 3 | Orange | 8 | Violet | 13 | Green/Green |
| 4 | Green | 9 | Gray | 14 | Red/Red |
| 5 | Red | 10 | Brown | 15 | Black/Black |
| Wire Number | Color | Wire Number | Color | Wire Number | Color |
|---|---|---|---|---|---|
| 1 | Red | 6 | Black | 11 | Red/White |
| 2 | Blue | 7 | Brown | 12 | Blue/White |
| 3 | Yellow | 8 | Orange | 13 | Yellow/White |
| 4 | Green | 9 | Violet | 14 | Green/White |
| 5 | White | 10 | Gray | 15 | Black/White |
| AWG Size | Color | AWG Size | Color | AWG Size | Color | AWG Size | Color |
|---|---|---|---|---|---|---|---|
| 26 | Black | 18 | White | 10 | Brown | 2 | Red |
| 24 | Blue | 16 | Blue | 8 | Red | 1 | White |
| 22 | Green | 14 | Green | 6 | Blue | 1/0 | Blue |
| 20 | Red | 12 | Yellow | 4 | Yellow | 2/0 | Green |
| Band Configuration | Wire Number | Band Configuration | Wire Number | Band Configuration | Wire Number |
|---|---|---|---|---|---|
| None | 1 | 6 Narrow | 6 | 1 Wide, 4 Narrow | 11 |
| 2 Narrow | 2 | 7 Narrow | 7 | 1 Wide, 5 Narrow | 12 |
| 3 Narrow | 3 | 1 Wide, 1 Narrow | 8 | 2 Wide, 1 Narrow | 13 |
| 4 Narrow | 4 | 1 Wide, 2 Narrow | 9 | 2 Wide, 2 Narrow | 14 |
| 5 Narrow | 5 | 1 Wide, 3 Narrow | 10 | 2 Wide, 3 Narrow | 15 |
| Symbol | Specification | Symbol | Specification | Symbol | Specification |
|---|---|---|---|---|---|
| CA | AS22759/13 | ML | AS81044/12 | ST | AS22759/46 |
| CB | AS22759/14 | MM | AS81044/13 | SV | AS22759/47 |
| CC | AS22759/15 | MR | MIL-DTL-81381/7 | SW | AS22759/48 |
| DB* | AS22759/180 | MS | MIL-DTL-81381/8 | SX | AS22759/49 |
| DC* | AS22759/181 | MT | MIL-DTL-81381/9 | SY | AS22759/50 |
| DE* | AS22759/182 | MV | MIL-DTL-81381/10 | TA | AS22759/8 |
| DF* | AS22759/183 | MW | MIL-DTL-81381/11 | TE | AS22759/16 |
| DG* | AS22759/184 | MY | MIL-DTL-81381/12 | TF | AS22759/17 |
| DH* | AS22759/185 | NA | MIL-DTL-81381/13 | TG | AS22759/18 |
| DJ* | AS22759/186 | NB | MIL-DTL-81381/14 | TH | AS22759/19 |
| DK* | AS22759/187 | NE | MIL-DTL-81381/17 | TK | AS22759/20 |
| DL* | AS22759/188 | NF | MIL-DTL-81381/18 | TL | AS22759/21 |
| DM* | AS22759/188 | NG | MIL-DTL-81381/19 | TM | AS22759/22 |
| DN* | AS22759/190 | NH | MIL-DTL-81381/20 | TN | AS22759/23 |
| DP* | AS22759/191 | NK | MIL-DTL-81381/21 | VA | AS22759/5 |
| DR* | AS22759/192 | NL | MIL-DTL-81381/22 | WA | AS22759/6 |
| E | AS22759/2 | RA | AS22759/3 | WB | AS22759/80 |
| EA | AS22759/1 | RB | AS22759/4 | WC | AS22759/81 |
| JA | MIL-DTL-81381/1 | RC | AS22759/11 | WE | AS22759/82 |
| JB | AS22759/28 | RE | AS22759/12 | WF | AS22759/83 |
| JC | AS22759/29 | SA | AS22759/7 | WG | AS22759/84 |
| JD | AS22759/30 | SB | AS22759/32 | WH | AS22759/85 |
| JE | AS22759/31 | SC | AS22759/33 | WJ | AS22759/86 |
| JF | AS25038/3 | SD | AS22759/34 | WK | AS22759/87 |
| LE | AS22759/9 | SE | AS22759/35 | WL | AS22759/88 |
| LH | AS22759/10 | SM | AS22759/41 | WM | AS22759/89 |
| ME | AS81044/6 | SN | AS22759/42 | WN | AS22759/90 |
| MF | AS81044/7 | SP | AS22759/43 | WP | AS22759/91 |
| MH | AS81044/9 | SR | AS22759/44 | WR | AS22759/92 |
| MJ | AS81044/10 | SS | AS22759/45 |
