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9/27/01 AC 43.13-1B CHG 1 SECTION 16. WIRE MARKING 11-205. GENERAL. The proper identifica tion of electrical wires and cables with their circuits and voltages is necessary to provide safety of operation, safety to maintenance per sonnel, and ease of maintenance. a. Each wire and cable should be marked with a part number. It is common practice for wire manufacturers to follow the wire material part number with the five digit/letter C.A.G.E. code identifying the wire manufacturer. Ex isting installed wire that needs replacement can thereby be identified as to its performance ca pabilities, and the inadvertent use of a lower performance and unsuitable replacement wire avoided. b. The method of identification should not impair the characteristics of the wiring. CAUTION: Do not use metallic bands in place of insulating sleeves. Exercise care when marking coaxial or data bus cable, as deforming the cable may change its electrical characteristics. 11-206. WIRE IDENTIFICATION. To fa cilitate installation and maintenance, original wire-marking identification is to be retained. The wire identification marks should consist of a combination of letters and numbers that identify the wire, the circuit it belongs to, its gauge size, and any other information to relate the wire to a wiring diagram. All markings should be legible in size, type, and color. 11-207. IDENTIFICATION AND IN- FORMATION RELATED TO THE WIRE AND WIRING DIAGRAMS. The wire identification marking should consist of simi lar information to relate the wire to a wiring diagram. 11-208. PLACEMENT OF IDENTIFI- CATION MARKINGS. Identification markings should be placed at each end of the wire and at 15-inch maximum intervals along the length of the wire. Wires less than 3 inches long need not be identified. Wires 3to 7 inches in length should be identified ap proximately at the center. Added identification marker sleeves should be so located that ties, clamps, or supporting devices need not be re moved in order to read the identification. The wire identification code must be printed to read horizontally (from left to right) or verti cally (from top to bottom). The two methods of marking wire or cable are as follows: a. Direct marking is accomplished by printing the cable’s outer covering. (See fig ure 11-23.) b. Indirect marking is accomplished by printing a heat-shrinkable sleeve and installing the printed sleeve on the wire or cables outer covering. Indirect-marked wire or cable should be identified with printed sleeves at each end and at intervals not longer than 6 feet. The individual wires inside a cable should be identified within 3 inches of their termination. (See figure 11-24.) 11-209. TYPES OF WIRE MARKINGS. The preferred method is to mark directly on the wire. A successful requirement qualifica tion should produce markings that meet the marking characteristics specified in MIL-W 5088 or AS50881A without causing insulation degradation. Teflon coated wires, shielded wiring, multi-conductor cable, and thermocou ple wires usually require special sleeves to carry identification marks. There are some wire marking machines in the market that can be used to stamp directly on the type wires mentioned above. Whatever method of mark ing is used, the marking should be legible and Par 11-205 Page 11-83PDF Image | AFS-640
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