DLA A-A-50552-1995 FITTINGS FOR CABLE POWER ELECTRICAL AND CONDUIT METAL FLEXIBLE《电源用导电的柔性金属绳索装配》.pdf

1、A-A-50552 m 9999974 0368337 201 m I Inch-Pound I Mav 31. 1995 SUPERSEDING March 26, 1993 A-A-50552 W-F-406E COMMERCIAL ITEM DESCRIPTION FITTINGS FOR CABLE, POWER, ELECTRICAL AND CONDUIT, METAL, FLEXIBLE The General Services Administration has authorized the use of this Commercial Item Description fo

2、r all federal agencies. 1. SCOPE. This description covers box connectors for flexible conduit, armored cable, and nonmetallic sheathed cable, bushings for armored cable, couplings for flexible conduit, adapters for connecting flexible conduit to rigid conduit, and electrical metallic tubing, and cla

3、mps for grounding armored cable and ground wire. 2. CLASSIFICATION. Fittings furnished under this specification shall be of the following types, classes, styles, and kinds as specified. Sizes shall conform to standard commercial sizes. Type I - Box connector, electrical Class 1 - Flexible steel cond

4、uit and round armored cable Style A - Straight connector, single attachment Style B - Straight connector, duplex attachment Style C - 45 degrees (O) angle connector Style D - 90 angle connector Kind a - Screw-in internal Kind b - Screw-in external Kind c - Clamp 2-screw Kind d - Saddle clamp 1-screw

5、 Kind e - Set-screw Kind f - Squeeze IBeneficial comments (recommendations, additions, deletions) and any pertinent ldata which may be of use in improving this document should be addressed to: ICommanding Officer (Code 156), Naval Construction Battalion Center, ll000 23rd Avenue, Port Hueneme, CA 93

6、043-4301, by using the Standardization IDocument Improvement Proposal (DD Form 1426) appearing at the end of this ldocument or bv letter. AMSC N/A FSC 5975 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking per

7、mitted without license from IHS-,-,-A-A-50552 Class Class Class Type II - Type III - Type IV - 2 - Oval (flat) armored cable Style E - Straight connector, single attachment Style F - Straight connector, duplex attachment Style G - 45 angle connector Style H - 90 angle connector Kind g - Screw-in ext

8、ernal Kind h - Clamp 2-screw Kind i - Saddle clamp 1-screw Kind j - Set-screw Kind k - Squeeze 3 - Liquid-tight flexible metallic conduit connectors Style I - Straight connector Style J - 45 angle connector Style K - 90 angle connector Style L - Straight connector, male bushing style Kind 1 - Screw-

9、in external 4 - Nonmetallic sheathed cable and service entrance cable Style M - Straight connector, single cable Style N - Straight connector, duplex cable Style O - 90 angle connector connectors Kind m - Oval cable Kind n - Round cable Bushing, electrical conductor, antishort, armored cable Couplin

10、g, electrical conduit, flexible steel Adapter, electrical conduit Class 5 - Flexible steel conduit or armored cable to rigid conduit Style P - With internal threaded connection to rigid conduit Style Q - With threadless connection to rigid conduit Class 6 - Flexible steel conduit or armored cable to

11、 electrical metallic tubing Type V - Clamp, electrical grounding Class 7 - With clamping jaws to fit standard ron pipe size (IPS) Pipe Style R - For bare armored cable Style S - For bare or insulated wires Class 8 - Armored cable hub for bare armored cable, with one bolt hole tongue 3. SALIENT CHARA

12、CTERISTICS. 3.1 DescriDtion. Fittings covered by this description shall be made of metal and conform to the applicable requirements of NEMA FB 1, UL 467 and UL 514B. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50552 3.2.1 Steel fabrication.

13、 The steel used in fabrication shall be free from kinks, sharp bends, and other conditions which would be deleterious to the finished product. Manufacturing processes shall not reduce the strength of the steel to a value less than intended by the design. Manufacturing processes shall be done neatly

14、and accurately. All bends shall be made by controlled means to ensure uniformity of size and shape. 3.3 Finish. Fittings shall have surfaces which are not chipped, warped, cracked, or blistered. Surfaces which are normally in contact with conductor insulation shall be rounded to prevent abrasion or

15、cutting of insulating material. 3.4 Threads. External and internal pipe threads shall be of the American Standard straight or taper type. 3.5 Box connectors. Box connectors shall be provided with a clamp or means for connecting to the conduit or cable and a hub and locknut arrangement, or a UL or CS

16、A approved equivalent, for connecting to outlet boxes through standard conduit knockouts. Connectors without locknuts shall be limited to circuits under 250 volts unless tested and UL listed for the purpose. Connectors that have tapered threads for threaded hubs need not have locknuts. Clamps shall

17、neither pierce the armor, damage the insulation of cables, nor distort or damage the conduit when accomplishing its normal function. Attachment means shall provide an effective electrical bond between joined metallic parts. Minimum hub size on connectors shall fit standard 1/2-inch conduit knockouts

18、. All other connectors shall fit standard conduit knockouts. Screws shall be of the fillister head type, except where required by fitting design; roundhead or washer head type screws may be used. The clamps or clamping means for attaching flexible conduit, armored cable, and nonmetallic sheathed cab

19、le to the connector shall provide adequate opening and clamping range to fulfill holding and bending requirements as specified in UL 514B and NEMA FB 1. Connectors without lookouts shall be limited to circuits under 250 volts. 3.6 Sleeves and bushings. Antishort sleeves and insulating bushings shall

20、 be unaffected by ordinary atmospheric conditions and be so formed that they shall not be distorted or dislodged by ordinary handling when secured in place. 3.7 Courlinzs and adamers. Couplings and adapters shall have a positive attachment means at each end and shall provide an effective electrical

21、bond between joined metallic parts. Coupling and adapter sizes indicated by a single dimension are for use with the same size conduit on each end. 3.8 Grounding clamos. Ground clamps shall meet construction and test requirements of UL 467. 4. REGULATORY REQUIREMENTS. 4.1 Materials. The offeror/contr

22、actor is encouraged to use recovered materials to the maximurn extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR). Unless otherwise specified herein, all 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,

23、-,-A-A-50552 equipment, material, and articles incorporated in the work covered by this description are to be new and fabricated using materials produced from recoverec materials to the maximum extent possible without jeopardizing the intended use. The term “recovered materials“ means materials whic

24、h have been collected or recovered from solid waste and reprocessed to become a source of raw materials, . as opposed to virgin, raw materials. None of the above shall be interpreted to mean that the use of used or rebuilt products are allowed under this description unless otherwise specified. 4.2 M

25、etric DrOdUCtS. Products manufactured to metric dimensions will be considered on an equal basis with those manufactured using inch-pound units, provided they fall within specified tolerances using conversion tables contained in the latest version of Federal Standard No. 376, and all other requiremen

26、ts of this Commercial Item Description including form, fit, and function are met. If a product is manufactured to metric dimensions and those dimensions exceed the tolerances specified in the inch/pound units, a request should be made to the contracting officer to determine if the product is accepta

27、ble. The contracting officer has the option of accepting or rejecting the product. 5. QUALITY ASSURANCE PROVISIONS. 5.1 Contractor certification. The contractor shall certify and maintain substantiating evidence that the product offered meets the salient characteristics of the Commercial Item Descri

28、ption, and that the product conforms to the producers own drawings, specifications, standards, and quality assurance practices, and is the same product offered for sale in the commercial marketplace. The government reserves the right to require proof of such conformance prior to first delivery and t

29、hereafter as may be otherwise provided for under the provisions of the contract. Contractor certifications shall include satisfactory evidence that the product meets requirements of NEMA FB 1 and UL 467 or UL 514B as applicable. 5.1.1 Zlnderwriter Laboratories Inc. certification. Recommended accepta

30、ble evidence of meeting the requirements of UL 467 or UL 514B shall be the UL certification symbol or label, listing in the UL electrical construction materials directory, or a certified test report from a recognized independent testing laboratory indicating the box connectors, bushings, couplings,

31、adapters and clamps have been tested and conform to UL 467 or UL 514B. 6. PRESERVATION, PACKAGING, PACKING AND MARKING. Preservation, packaging, packing and marking for shipment shall be in accordance with American Society for Testing and Materials (ASTM) D 3951 or as specified in the contract or or

32、der. 7. NOTES. 7.1 Part Identification Number (PIN). The following part identification numbering procedure is for government purposes and does not constitute a requirement for the contractor. The PINS to be used for items acquired to this description are created as follows: 4 Provided by IHSNot for

33、ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50552 AA50552 - m - 15 - X - 15 I I I I I- Kind I I I I I I I I Style I I I I I I Class I I I I Type I I Commercial Item Description Number 7.1.1 Types, classes. styles and kinds. The types, classes, styles, and kinds of

34、box connectors, bushings, couplings, adapters and clamps are identified by numeric and alpha characters as identified in paragraph 2. The following is an example of the PIN for a Type I electrical box connector, class 2, style H, kind g : AA50552 - 001 - 2 - H - g The following is an example of the

35、PIN for a Type V clamp, class 7, style S: AA50552 - OOV - 7- S 7.2 Source of documents. 7.2.1 NEMA Standards are available from the National Electrical Manufacturers Association (NEMA), 2101 L Street, N.W., Washington D.C. 20037. 7.2.2 UL Standards are available from Underwriters Laboratories, Inc.,

36、 333 Pfingsten Road, Northbrook, IL 60062-2096. 7.2.3 ASTM Standards are available from American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103. 7.3 Ordering data. a) Title, number, and &te of this description. b) Type, class, style, kind and size required. b) Specify sp

37、ecial packaging requirements. c) Contracting officer may request proof of certification of commercial item and UL certification prior to first contract delivery. 7.4 Intended use. The fittings covered by this description are intended for use as follows: Type I - For attaching cable or flexible condu

38、it to an outlet box. Type II - To provide protection for the cable insulation at the point on an armored cable where the armor terminates. Type III - To couple two sections of the same size flexible conduit. Type IV - For connecting armored cable or flexible conduit to rigid Type V - To provide mean

39、s for connecting a ground wire, bare armored conduit or electrical metallic tubing. or insulated, to a grounded piping system. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50552 7.5 Key word listinv. Adaptor Antishort conductor bushing Box c

40、onnector Grounding clamp Steel coupling MILITARY INTEREST: Custodians Amy - ER Navy - YD1 Air Force - 85 CIVIL AGENCY COORDINATING ACTIVITY: GSA-FSS Preparing Activity: Navy - YD1 (Project 5975-1142) U 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-