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MIL-C-55021/NEMA WC 55021 

 


 

General Description 

 

This specification covers electrical cables consisting of unshielded and unjacketed, shielded, jacketed, or shielded and jacketed twisted pairs and triples, and shielded or shielded and jacketed singles. The cable is intended for internal wiring of electrical equipment for application temperatures of -40 to 105 degrees Centigrade, or -65 to 200 degrees Centigrade. Cables constructed with polyvinyl chloride (PVC)-insulated wires or jackets are not to be used for aerospace applications.

 

 

Part Number Designation

 

B

24

C

904

-

903

-

902

P

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Wire Type

Conductor Size

Conductor Material

Color of 1st Wire

 

Color of 2nd Wire

 

Color of 3rd Wire

Covering over component

 

 

Type of Wire for M55021

 

Symbol Type

Wire Specification

B

MIL-DTL-16878/1

C

MIL-DTL-16878/2

D

MIL-DTL-16878/3

E

NEMA HP 3

EE

NEMA HP 3

BJ

MIL-DTL-16878/17

CJ

MIL-DTL-16878/18

DJ

MIL-DTL-16878/19

 

 

Finished Cable Covering Nomenclature for M55021

 

Symbol

Covering Over Finished Cable

U

Unjacketed and Unshielded

P

Polyvinyl Chloride (PVC) Jacket

F

Flourinated Ethylene Propylene (FEP) Jacket

J

Polyamide Jacket

T

Polytetraflouroethylene (PTFE) Jacket

S

Shielded and Unjacketed

SF

Shielded and covered with FEP jacket

SP

Shielded and covered with PVC jacket

SJ

Shielded and covered with Polyamide jacket

STW

Shielded and covered with wrapped PTFE jacket

STX

Shielded and covered with extruded PTFE jacket

 

 

Referenced Specification for M55021

 

Specification

Description

MIL-C-572

Cords, Yarns and Monofilaments Organic Synthetic Fiber

MIL-DTL-16878

Wire, Electrical, Insulated, General Specification for

MIL-DTL-55021/1

Cable, Electrical, Shielded Singles, Shielded and Jacketed Singles, Twisted Pairs and Triples, Internal Hookup, -40 to 105°c  

MIL-DTL-55021/2

Cable, Electrical, Shielded Singles, Shielded and Jacketed Singles, Twisted Pairs and Triples, Internal Hookup, -65 to 200°c  

FED-STD-228

Cable and Wire, Insulated; Methods of Testing

MIL-STD-681

Identification Coding and Application of Hookup and Lead Wire

ASTM D3032

Standard Test Methods for Hookup Wire Insulation (DoD adopted)

ASTM D4066

Standard Classification System for Nylon Injection and Extrusion Materials (PA) (DoD Adopted)

NEMA HP 3

Electrical and Electronic PTFE (Polytetraflouroethylene ) Insulated High Temperature Hoop-up Wire; Types ET

9250 Volts), E (600 Volts), and EE (1000 Volts) (DoD Adopted)