B49–20 Standard Specification for Copper Rod for Electrical Purposes

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标准简介

Designation: B49 - 20 Standard Specification for Copper Rod for Electrical Purposes11. Scope@1.1 This specification covers the requirements for rod indiametcrs from Va in. to 1Ve in.(6.4 mm to 35 mm) producedfrom high conductivity coppers listed in Table 1. namely,electrolytic tough-pitch, oxygen-free, or fire-refined high con-ductivity coppers, and are suitable for further fabrication intoelcctrical conductors.1.2The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to Sl units that are provided for information onlyand are not considered standard.1.3 The following safety hazards caveat pertains only toSection 13.This standard does nor purport to address all of thesafety concerns.if ary. associated wirh irs use. It is rheresponsibility of the user of this siandard to establish appro-pricate sefery; heaie，and evirornntetal practices and deter-rine rhe applicabiliry of regulatory limirations prior to use.1.4 This interncatiovnal sianderd was developed in caccor-dance with inersatioveally recognized principles onr siandcrd-ization established in the Decision on Principles for rheDevelopnenr of Interrictioncl Sta

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