The Lineman's and Cableman's Field Manual, Second Edition by Thomas M. Shoemaker

By Thomas M. Shoemaker

A Compact, On-the-Job Reference for Linemen and CablemenFully up to date with the newest NEC and OSHA criteria, this one-stop moveable advisor includes the an important electric info, formulation, calculations, and defense details crucial at any jobsite. The Lineman's and Cableman's box guide, moment version, presents easy-to-follow information on developing, working, and conserving either overhead and underground electrical distribution and transmission traces. important charts, tables, diagrams, equations, and definitions are incorporated all through this useful source. the hot version of the handbook covers: Line conductors * Cable, splices, and terminations * Distribution voltage transformers * Wood-pole buildings * Guying * Lightning and surge safety * Fuses * Inspection and upkeep plans * Tree trimming * Rope, knots, splices, and equipment * Grounding * protecting grounds * safeguard gear and rescue

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Extra info for The Lineman's and Cableman's Field Manual, Second Edition

Example text

ASTM B230: Specification for Aluminum 1350-H19 Wire for Electrical Purposes. B231: Specification for Concentric-Lay-Stranded Aluminum 1350 Conductors. 4 All Aluminum Conductor—Electrical Properties Size & stranding Resistance 60-Hz reactance 1-ft equivalent spacing AC 60 Hz Code word AWG or kcmil PEACHBELL ROSE IRIS PANSY POPPY ASTER PHLOX OXLIP SNEEZEWORT VALERIAN DAISY LAUREL. 378 Courtesy of ALCAN CABLE. NOTES: 1. 2% IACS with stranding increments as per ASTM B231. 1 Courtesy of ALCAN CABLE.

If the frequency and speed of an alternator are known, the number of poles in its field can be calculated by use of the following formula: p5 f 3 120 rpm The Electric System 25 Example: How many poles does an alternator have if it generates 60 Hz at 1200 rpm? Solution: p5 60 3 120 f 3 120 5 5 6 poles rpm 1200 Transformer (single-phase) Primary current. The full-load primary current can be readily calculated if the kVA rating of the transformer and the primary voltage are known: IP 5 kVA 3 1000 EP where EP ϭ rated primary voltage and IP ϭ rated primary current.

ASTM: Conductors manufactured to ASTM B856, Specification for Concentric-Lay-Stranded Aluminum Conductors, Coated Steel Supported 3ACSS). ACSS: Aluminum Conductor, Steel Supported. ACSS/MA, supported with ZN-5A1-MM coated steel core wire, coating Class A in accordance with specification ASTM B802. 0600 1856 1933 1936 2025 2020 2116 2122 2223 2221 2303 2313 2383 2395 2559 2543 2749 3089 3089 3227 Courtesy of ALCAN CABLE. NOTES: 1. 5, at sea level. 2. Resistance and ampacity based on 63% IACS AI and 8% IACS steel core wire @20°C.

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