I. General
requirements of 675.4(A) shall be permitted.
(C) Supports. Irrigation cable shall be secured by straps, hangers, or similar fittings identified for the purpose and so installed as not to damage the cable. Cable shall be supported at intervals not exceeding 1.2 m (4 ft).
(D) Fittings. Fittings shall be used at all points where irrigation cable terminates. The fittings shall be designed for use with the cable and shall be suitable for the conditions of service.
675.1 Scope. The provisions of this article apply to elec- trically driven or controlled irrigation machines, and to the branch circuits and controllers for such equipment.
675.2 Definitions.
Center Pivot Irrigation Machine. A multimotored irrigation machine that revolves around a central pivot and employs alignment switches or similar devices to control individual motors.
Collector Rings. An assembly of slip rings for transferring electric energy from a stationary to a rotating member.
Irrigation Machine. An electrically driven or controlled machine, with one or more motors, not hand-portable, and used primarily to transport and distribute water for agricultural purposes.
675.3 Other Articles. These provisions are in addition to, or amendatory of, the provisions of Article 430 and other articles in this Code that apply except as modified in this article.
675.4 Irrigation Cable.
(A) Construction. The cable used to interconnect enclo sures on the structure of an irrigation machine shall be an assembly of stranded, insulated conductors with nonhygro- scopic and nonwicking filler in a core of moisture- and flame-resistant nonmetallic material overlaid with a metallic covering and jacketed with a moisture-, corrosion-, and sunlight-resistant nonmetallic material.
The conductor insulation shall be of a type listed in Table 310.13(A) for an operating temperature of 75°C (167°F) and for use in wet locations. The core insulating material thickness shall not be less than 0.76 mm (30 mils), and the metallic overlay thickness shall be not less than 0.20 mm (8 mils). The jacketing material thickness shall be not less than 1.27 mm (50 mils).
A composite of power, control, and grounding conductors in the cable shall be permitted.
(B) Alternate Wiring Methods. Installation of other listed cables complying with the construction
675.5 More Than Three Conductors in a Raceway or Cable. The signal and control conductors of a raceway or cable shall not be counted for the purpose of derating the conductors as required in 310.15(B)(2)(a).
675.6 Marking on Main Control Panel. The main control panel shall be provided with a nameplate that shall give the following information:
(1) The manufacturer's name, the rated voltage, the phase, and the frequency
(2) The current rating of the machine
(3) The rating of the main disconnecting means and size of overcurrent protection required
675.7 Equivalent Current Ratings. Where intermittent duty is not involved, the provisions of Article 430 shall be used for determining ratings for controllers, disconnecting means, conductors, and the like. Where irrigation machines
have inherent intermittent duty, the determinations of equivalent current ratings in 675.7(A) and (B) shall be used.
(A) Continuous-Current Rating. The equivalent con- tinuous-current rating for the selection of branch-circuit conductors and overcurrent protection