ASTM B263-14(R2020) pdf free download
ASTM B263-14(R2020) pdf free download.Standard Test Method for Determination of Cross-Sectional Area of Stranded Conductors
1. Scope
1.1 This test method covers the procedure for determining the cross-sectional area of stranded conductors by the mass method. 1.2 The values stated in inch-pound or SI units are to be regarded separately as the standard. The values in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appro- priate safety, health, and environmental practices and deter- mine the applicability ofregulatory limitations prior to use. 1.4 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.
3. Terminology
3.1 Definitions ofTerms Specific to This Standard: 3.1.1 lot, n—a lot is any amount of stranded conductor of one type and size presented for acceptance at one time. 3.1.2 sample, n—a sample is a quantity of production units (reels, spools, coils, and so forth) selected at random from the lot for the purpose ofdetermining conformance ofthe lot to the requirements of this test method. 3.1.3 specimen, n—a specimen is a length of stranded conductor removed for test purposes from any individual production unit of the sample.
4. Apparatus
4.1 Balance, for measurement ofmass, accurate to 0.1 %. 4.2 Steel Scale, for measurement of length, with smallest divisions not greater than 1 ⁄ 32 in. [1 mm]. 4.3 Jig, or equivalent equipment, for cutting the conductor to length and at right angles to its axis.
5. Sampling
5.1 Samples shall be taken from the outer end of reel or spool lengths, or from either end of coiled lengths. 5.2 Unless otherwise specified by the purchaser at the time of placing the order, a sample shall consist of the number of production units (reels or coils) shown in Table 1 or in accordance with Specification B830.
7. Procedure
7.1 Cut the test specimen, making sure that the ends are at the right angles to the axis of the conductor. 7.2 Measure the length ofthe specimen at room temperature (see Note) to the nearest 1 ⁄ 32 in. [1 mm], and measure the mass to within 60.1 %, converting to pounds [grams] if weighed in other units.N OTE 1—Correction for temperature variation need not be made, since the error introduced in the length measurement by the temperature variation is less than the required accuracy of the length measurement.
9. Precision and Bias
9.1 Precision—This test method has been in use for many years. No statement of precision has been made and no work has been planned to develop such a statement. 9.2 Bias—This test method has no bias because the value for cross-sectional area is determined solely in terms of this test method.
