MIL-DTL-55446(2006) Cables, Telephone, Switchboard .pdf

INCH-POUND MIL-DTL-55446C 21 November 2006 SUPERSEDING MIL-DTL-55446B 27 October 2000 DETAIL SPECIFICATION CABLES, TELEPHONE, SWITCHBOARD: PLASTIC INSULATED, PLASTIC JACKETED Inactive for new design after 16 June 1997 This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers plastic insulated, plastic jacketed, telephone switchboard cables consisting of number 22 AWG conductors in combinations of pairs and singles ranging from 4 pairs to 201 pairs (see 1.2). 1.2 Classification. The types of switchboard cables (see 6.2) covered by this specification are listed in table I. TABLE I. Switchboard cable types. Number of pairs Total number Maximum average overall diameter of finished cables and singles of conductors AMSC N/A FSC 6145 (No.22 AWG) inches (mm) 1/ 4 pairs 8 .360 (9.14) 5 pairs, 5 singles 15 .440 (11.18) 6 pairs 12 .390 (9.91) 8 pairs, 8 singles 24 .480 (12.19) 10 pairs, 10 singles 30 .540 (13.72) 11 pairs 22 .470 (11.94) 16 pairs 32 .530 (13.46) 20 pairs 40 .560 (14.22) 20 pairs, 10 singles 50 .610 (15.49) 20 pairs, 20 singles 60 .660 (16.76) 25 pairs 50 .610 (15.49) 26 pairs, 26 singles 78 .720 (18.29) 30 pairs 60 .640 (16.26) 40 pairs 80 .720 (18.29) 41 pairs, 41 singles 123 .830 (21.08) 51 pairs 102 .800 (20.32) 76 pairs 152 .910 (23.11) 101 pairs 202 1.030 (26.16) 101 pairs, 100 singles 302 1.250 (31.75) 201 pairs 402 1.410 (35.81) 1/ Dimensions are in inches. Metric equivalents are given for information only. Comments, suggestions, ore questions on this document should be addressed to Defense Supply Center Columbus, ATTN: DSCC-VAI, P.O. Box 3990, Columbus, Ohio 43218-3990, or email to WireCabledscc.dla.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at http:/assist.daps.dla.mil. MIL-DTL-55446C 2 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements documents cited in sections 3, 4, or 5 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract (see 6.2). FEDERAL STANDARD FED-STD-228 - Cable and Wire, Insulated; Methods of Testing COMMERCIAL ITEM DESCRIPTION A-A-59551 - Wire, Electrical, Copper (Uninsulated) DEPARTMENT OF DEFENSE STANDARD MIL-STD-104 - Limits For Electrical Insulation Colors (Copies of these documents are available online at http:/assist.daps.dla.mil/quicksearch/ or http:/assist.daps.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) MIL-DTL-55446C 3 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. NATIONAL CONFERENCE OF STANDARDS LABORATORIES (NCSL) NCSL-Z540.1 - Calibration Laboratories and Measuring and Test Equipment, General Requirements. (Copies of this document are available from http:/www.ncsli.org or from the National Conference of Standards Laboratories (NCSL), 2995 Wilderness Place, Suite 107, Boulder, CO 80381-5404.) 2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Description. The cables covered by this specification are switchboard cables, the conductors of which are No. 22 AWG solid copper wire, tinned and individually insulated with an extruded polyvinyl chloride (PVC) covering. The insulation is color coded for convenient identification of pairs and single wires. The core is made up of pairs and single wires as required and cabled either concentrically in layers or in unit construction, depending on its size. The individual units of unit-constructed cables are bound with color coded spaced servings of yarn or polyethylene tape binders. The core is covered with an overlapped spiral winding of paper or, at the option of the manufacturer, polyester tape. Over this polyester covering and beneath the outer sheath is a nylon ripcord to facilitate stripping. The outer sheath is an extruded PVC jacket. 3.2 Recycled, recovered, or environmentally