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This specification covers aluminum 1350-H19, 1350-H16 or -H26, 1350-H14 or -H24, and 1350-H142 or -H242, bare concentric-lay-stranded conductors constructed with a straight round central wire surrounded by one or more layers of helically layered wires. Conductors are classified as Class AA for bare conductors usually used in overhead lines; Class A for conductors to be covered with weather resistant materials, and for bare conductors where greater flexibility than is afforded by Class AA is required; Class B for conductors to be insulated with various materials such as rubber, paper, varnished cloth, and so forth, and for the conductors indicated under Class A where greater flexibility is required; and Classes C and D for conductors where greater flexibility is required than is provided by Class B conductors. Aluminum wire employed in Classes AA and A conductors shall be 1350-H19, unless otherwise specified. The temper of conductors of Classes B, C and D shall be designated. The direction of lay of the outer layer shall be right-hand for Classes AA and A and left-hand for other classes. The various classes of concentric-lay-stranded conductors shall conform to the required areas of cross section, numbers, and diameters of wires. The rated strength of 1350-H19 conductors shall be taken as the percent of the sum of the strengths of the component wires, calculated using the nominal wire diameters and the specified minimum average tensile strength given in Specification B 230/B 230M for 1350-H19 wire.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers aluminum 1350-H19 (extra hard), 1350-H16 or -H26 (3/4 hard), 1350-H14 or -H24 (1/2 hard), and 1350-H142 or -H242 (1/2 hard), bare concentric-lay-stranded conductors constructed with a straight round central wire surrounded by one or more layers of helically layed wires. The conductors are for general use for electrical purposes (Explanatory and ).
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.2.1 For density, resistivity and temperature, the values stated in SI units are to be regarded as standard.
Note 1: Prior to 1975, aluminum 1350 was designated as EC aluminum.
Note 2: The aluminum and temper designations conform to ANSI Standard H35.1/H35.1M. Aluminum 1350 corresponds to Unified Numbering System A91350 in accordance with Practice .
Note 3: Sealed conductors that are intended to prevent longitudinal water propagation and are further covered/insulated are also permitted within the guidelines of this specification.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
B193 Test Method for Resistivity of Electrical Conductor Materials
B230/B230M Specification for Aluminum 1350H19 Wire for Electrical Purposes
B263 Test Method for Determination of Cross-Sectional Area of Stranded Conductors
B354 Terminology Relating to Uninsulated Metallic Electrical Conductors
B609/B609M Specification for Aluminum 1350 Round Wire, Annealed and Intermediate Tempers, for Electrical Purposes
B682 Specification for Metric Sizes of Electrical Conductors
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
ANSI DocumentsANSI H35.1
NIST DocumentNBS Handbook 100Copper Wire Tables
Aluminum Association DocumentPublication 50 Code Words for Overhead Aluminum Electrical Conductors
ICS Number Code 29.240.20 (Power transmission and distribution lines)
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ASTM B231 / B231M-16, Standard Specification for Concentric-Lay-Stranded Aluminum 1350 Conductors, ASTM International, West Conshohocken, PA, 2016, www.astm.orgBack to Top