Home>ASTM Standards>ASTM B226-11(R2021) pdf free download

ASTM B226-11(R2021) pdf free download

ASTM B226-11(R2021) pdf free download.Standard Specification for Cored, Annular, Concentric-Lay-Stranded Copper Conductors
1.1 This specification covers cored, annular, concentric-lay- stranded conductors made from round soft copper wires, either uncoated or coated with tin for use as electrical conductors (Explanatory Note 1 and Note 2).
1.2 The constructions prescribed herein are suitable for bare conductors, or for conductors to be covered with weather- resistant (weather-proof) material, or for conductors to be insulated with rubber, varnished cloth, or impregnated paper, except types such as “oil-filled” or “gas-filled” (Explanatory Note 3).
1.3 Cored, annular conductor constructions not included in this specification shall be specifically agreed upon between the manufacturer and the purchaser when placing the order.
1.4 These constructions are not recommended for use as electric furnace leads where great flexibility is required and special conductor designs are indicated in consideration of the particular service requirements.
1.5 The SI values for density are regarded as the standard. For all other properties the inch-pound values are to be regarded as standard and the SI units may be approximate.
1.6 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
8.1 Tests for the electrical properties of wires composing conductors made from soft or annealed copper wire, bare or coated, shall be made before stranding.
8.2 Tests for the physical properties of soft or annealed copper wire, bare or coated, may be made upon the wires before stranding or upon wires removed from the completed stranded conductor, but need not be made upon both. Care shall be taken to avoid mechanical injury to wire removed from the conductor for the purpose of testing.
8.3 The physical properties of wire when tested before stranding shall conform to the applicable requirements of 11.2.
8.4 The physical properties of wires removed from the completed stranded conductor shall be permitted to vary from the applicable requirements of 11.2 by the following amounts (Explanatory Note 5):
8.4.1 Average ofResults Obtained on All Wires Tested—The minimum elongation required shall be reduced in numerical value 5 (for example, from 30 to 25 %) from the numerical requirements for the wire before stranding.
8.4.2 Results Obtained on Individual Wires—The elongation ofindividual wires shall be reduced in numerical value 15 from the minimum requirements before stranding (that is, 10 in addition to the 5 allowed in 8.4.1) but in no case shall the elongation of any individual wire be less than 5 %.
8.5 In the event that the requirements prescribed in 8.4.2 are met but those prescribed in 8.4.1 are not met, a retest shall be permitted wherein all wires of the conductor shall be tested for the purpose of final determination of conformance to 8.4.
8.6 Elongation tests to determine compliance shall not be made on the conductor as a unit. 8.7 If a tin coating test is required, it shall be made on wires prior to stranding.
14.1 Package sizes for conductors shall be agreed upon between the manufacturer and the purchaser in the placing of individual orders.
14.2 The conductors shall be protected against damage in ordinary handling and shipping. If heavy wood lagging is required, it shall be specified by the purchaser at the time of placing the order.
14.3 The net mass, length (or lengths, if more than one length is included in the package), size, kind of conductor, purchase order number, reel number, and any other markings required by the purchase order shall be marked on a tag attached to the end of the conductor inside the package. The same information, together with the manufacturer’s serial number (if any) and all shipping marks required by the purchaser, shall appear on the outside of each package.

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