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IEEE 1185-2019 pdf free

IEEE 1185-2019 pdf free.IEEE Recommended Practice for Cable Installation in Generating Stations and Industrial Facilities.
The requirement to show metric units first and, if desired, English units second in parentheses after the metric units is dictated by IEEE Policy 9.18, and has been implemented in this document even though the customary practice when installing American Wire Gauge (AWG) wire and cable is to use the English units. The user of this document may choose to use the English units, since cables made to AWG sizes are typically installed using English units of measure, even though the metric units are shown first and English units second in parentheses. Conformance to this recommended practice can be achieved using either metric or English units provided the user is consistent when selecting and applying the units. The user is strongly cautioned not to mix units as mixing units can and will result in installation issues. The user is encouraged to select units that are most familiar to the installers so as to reduce the potential for creating installation problems that could go undetected until wire and cable failures occur, which is often years after installation. It should also be noted that due to the reversal of the order of metric and English units, an attempt was made to keep the significant.
figures of the metrie and English units comparable. However, due the application of rounding principles, the mathematical conversion from English to metric and metric to English may not be exact.
The user is also cautioned to recognize the difference between force and mass especially within the English system of units since term“pound” (lb) has been often misapplied, which can result in errors in the application of the equations. Attempts have been made within this document to be clear in the terminology to avoid confusion and misapplication of this concept in both the metric and English units. It should also be noted that cable manufacturers give cable weights in SI units using“kg/m” whereas in English the information is provided in terms of“1/f’. The metric units are clearly mass per unit length whereas the English units are more ambiguous. In this context, cable weight in English units (1b/ft) is a weight per unit length. A pound (force) is equal to pound (mass) on the surface of the Earth, and thus is not multiplied by the gravity constant “g”. For clarity, equations using cable weigh have often been shown as two equations, one for metric and the other for English. Since the metric equation uses cable weight in terms of mass per unit length, the acceleration due to gravity constant“g” has been added to the metric equation as applicable, which does not appear in the English equation.
The word shall indicates mandatory requirements strictly to be followed in order to conform to the standard and from which no deviation is permitted (shall equals is required to).
The word should indicates that among several possibilitis one is recommended as particularly suitable, without mentioning or excluding others; or that a certain course of action is preferred but not necessarily required (should equals is recommended that).
The word may is used to indicate a course of action permissible within the limits of the standard (may equals is permitted to).
The word can is used for statements of possibility and capability, whether material, physical, or causal (can equals is able to).
The following referenced documents are indispensable for the application of this document (i.e.. they must be understood and used, so each referenced document is cited in text and its relationship to this document is explained). For dated references, only the edition cited applies. For undated references, the latest edition ofthe referenced document (including any amendments or corrigenda) applies.IEEE 1185 pdf download.

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