MIL-C 27500 NEMA WC27500
NEMA WC27500 (Formerly MIL-DTL-27500)
How to Build a Cable
This specification allows an almost infinite combination of wire, shielding. and jacketing materials. Cables may be unjacketed, jacketed, shielded, or shielded and jacketed. Care must be exercised in the selection of components to assure compatibility
[For example, a tin plated shield will corrode or melt if placed under a PTFE (06) jacket.]
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Cable Designation
| M27500 | - | 22 | RC | 2 | S | 06 |
| Color Code of Wire | AWG of Conductor | Basic Wire Spec | Number of Wires | Shield Type | Jacket Type |
Color Code
The preferred color code (-) is as follows:
Conductors:
|
Wire# |
Color | Wire# | Color | Wire# | Color |
| 1 | White | 6 | Wht/Blk | 11 | W/Blu/Blu |
| 2 | Wht/Blue | 7 | Wht/Ylw | 12 | W/O/O |
| 3 | Wht/Org | 8 | Wht/Vio | 13 | W/Grn/Grn |
| 4 | Wht/Grn | 9 | Wht/Gry | 14 | W/R/R |
| 5 | Wht/Red | 10 | Wht/Brn | 15 | W/Blk/Blk |
Color Code (F) uses an alternate stripe patern. Color Code (A) uses solid color conductors.
Optional color codes include: G, B, K,L, C, H, D, J, E, M, and N. See attached for description.
Other colors may be used if specified in writing when ordering
Basic Wire Specifications
Symbol Sequence
|
A |
AS5086/1 1 |
ME |
MIL-W-81044/6 |
P |
MIL-W-5086/4 1 |
TL |
AS22759/21 |
|
AA |
AS5088/5 1 |
MF |
MIL-W-81044/7 |
RA |
AS22759/3 |
TM |
AS22759/22 |
|
AB |
AS5086/6 1 |
MG |
MIL-W-81044/8 2 |
RB |
AS22759/4 |
TN |
AS22759/23 |
|
AD |
AS5086/7 1 |
MH |
MIL-W-81044/9 |
RC |
AS22759/11 |
VA |
AS22759/5 |
|
B |
AS5086/2 1 2 |
MJ |
MIL-W-81044/10 |
RE |
AS22759/12 |
WA |
AS22759/6 |
|
C |
AS5086/3 1 2 |
MK |
MIL-W-81044/11 2/ |
SA |
AS22759/7 |
WB |
AS22759/80 3 |
|
CA |
AS22759/13 |
ML |
MIL-W-81044/12 |
SB |
AS22759/32 |
WC |
AS22759/81 3 |
|
CB |
AS22759/14 |
MM |
MIL-W-81044/13 |
SC |
AS22759/33 |
WE |
AS22759/82 3 |
|
CC |
AS22759/15 |
MR |
MIL-W-81381/7 |
SD |
AS22759/34 |
WF |
AS22759/83 3 |
|
E |
AS22759/2 |
MS |
MIL-W-81381/8 |
SE |
AS22759/35 |
WG |
AS22759/84 3 |
|
EA |
AS22759/1 |
MT |
MIL-W-81318/9 |
SM |
AS22759/41 |
WH |
AS22759/85 3 |
|
F |
MIL-DTL-8777, MS27110 MS27110 |
MV |
MIL-W-81381/10 |
SN |
AS22759/42 |
WJ |
AS22759/86 3 |
|
H |
MIL-W-8777, MS25471 |
MW |
MIL-W-81381/11 |
SP |
AS22759/43 |
WK |
AS22759/87 3 |
|
JA |
MIL-W-25038/1 |
MY |
MIL-W-81381/12 |
SR |
AS22759/44 |
WL |
AS22759/88 3 |
|
JB |
AS22759/28 |
NA |
MIL-W-81381/13 |
SS |
AS22759/45 |
WM |
AS22759/89 3 |
|
JC |
AS22759/29 |
NB |
MIL-W-81381/14 |
ST |
AS22759/46 |
WN |
AS22759/90 3 |
|
JD |
MIL-22759/30 |
NE |
MIL-W-81381/17 |
TA |
AS22759/8 |
WP |
AS22759/91 3 |
|
JE |
AS22759/31 |
NF |
MIL-W-81381/18 |
TE |
AS22759/16 |
WR |
AS22759/92 3 |
|
JF |
MIL-W-25038/3 |
NG |
MIL-W-81381/19 |
TF |
AS22759/17 |
|
|
|
LE |
AS22759/9 |
NH |
MIL-W-81381/20 |
TG |
AS22759/18 |
|
|
|
LH |
AS22759/10 |
NK |
MIL-W-81381/21 |
TH |
AS22759/19 |
|
|
|
MD |
MIL-W-81044/5 2 |
NL |
MIL-W-81381/22 |
TK |
AS22759/20 |
|
|
1 Not for use in aerospace applications 2 Inactive for new design
3 Not for Naval Air Systems Command usage.
Number of Wires
Maximum number of wires is 15.
The number of wires will be as designated. Unshielded cables may have from 2 to 15 conductors. Shielded cables (either unjacketed or jacketed) may have from 1 to 15 conductors. Cables with 10 to 15 conductors will be max. AWG 12.
Shield Type
Symbol indicates shielding material and whether single or double layered
|
Single Shield Symbol |
Double Shield Symbol |
Shield Material |
Shield Material Maximum Temperature |
|
U |
|
No shield |
|
|
T |
V |
Tin-coated copper, round |
150o C (302o F) |
|
S |
W |
Silver-coated copper, round |
200o C (392o F) |
|
N |
Y |
Nickel-coated copper, round |
260o C (500o F) |
|
F |
Z |
Stainless steel, round |
400o C (752o F) |
|
C |
R |
Nickel-clad Copper, round |
400o C (752o F) |
|
M |
K |
Silver-coated high strength copper alloy, round |
200o C (392o F) |
|
P |
L |
Nickel-coated high strength copper alloy, round |
260oC (500o F) |
|
G |
A |
Silver-coated copper, flat |
200o C (392o F) |
|
H |
B |
Silver-coated high strength copper alloy, flat |
200o C (392o F) |
|
* |
# |
Nickel-coated copper, flat |
260oC (500o F) |
|
J |
D |
Tin-coated copper flat |
150o C (302o F) |
|
E |
X |
Nickel-coated high strength copper alloy, flat |
260o C (500o F) |
|
I |
Q |
Nickel-chromium alloy, flat |
400o C (752o F) |
|
$ |
+ |
Heavy Silver-coated copper, round |
200o C (392o F) |
Jacket Type
Symbol defines jacket material and standard color
|
Single Jacket |
Double Jacket |
Material |
Temperature Limit |
|
00 |
00 |
No jacket |
|
|
01 |
51 |
PVC – White |
90o C |
|
02 |
52 |
Extruded nylon - Clear |
105o C |
|
03 |
53 |
Braided nylon - White |
105o C |
|
04 |
54 |
Braided Polyester over Polyester Tape |
150o C |
|
05 |
55 |
Extruded FEP - Clear |
200o C |
|
06 |
56 |
Taped PTFE - White |
260o C |
|
07 |
57 |
FG/Taped PTFE - White |
260o C |
|
08 |
58 |
Cross Linked PVF2 - White |
150o C |
|
09 |
59 |
Extruded FEP - White |
200o C |
|
10 |
60 |
PFV2 – Clear |
125o C |
|
11 |
61 |
Taped Polyimide/FEP - Natural |
200o C |
|
12 |
62 |
Taped Polyimide/FEP |
200o C |
|
14 |
64 |
Extruded ETFE (Tefzel) - White |
150o C |
|
15 |
65 |
Extruded ETFE (Tefzel) - Clear |
150o C |
|
16 |
66 |
Nylon Braid/Tape PTFE |
200o C |
|
17 |
67 |
ECTFE - White |
150o C |
|
18 |
68 |
ECTFE - Clear |
150o C |
|
20 |
70 |
PFA - White |
260o C |
|
21 |
71 |
PFA - Clear |
260o C |
|
22 |
72 |
Polyimide/FEP |
200o C |
|
23 |
73 |
Cross Linked Tefzel (XLETFE) - White |
200o C |
|
24 |
74 |
Taped PTFE over Taped Polyimide/FEP - White |
260o C |
|
25 |
75 |
Smooth Taped PTFE over Polyimide/FEP - White |
260o C |
|
26 |
76 |
Low Fluoride, XLETFE – White |
200o C |