Broadband Applications & Construction Manual - Public - CommScope
Broadband Applications & Construction Manual - Public - CommScope
Broadband Applications & Construction Manual - Public - CommScope
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13.4 Appendix<br />
NESC Standards and <strong>Construction</strong> Grades<br />
National Electric Safety Code (NESC) Standards and <strong>Construction</strong> Grades<br />
The NESC defines grades of construction on the basis of strength requirements for reasons of safety. Section 24 of<br />
the NESC identifies construction grades B (the highest), C, D and N (the lowest).<br />
Grade D construction typically applies to broadband coaxial cable and fiber optic cable. <strong>Construction</strong> grades B<br />
or C may be applicable dependent on the situations that exist. If more than one grade of construction applies to<br />
a situation, the higher grade will apply. A qualified engineer should evaluate required construction and dictate the<br />
grade of construction. The strength requirements for the various grades of construction are defined within Section<br />
26 of the NESC.<br />
The NESC typically identifies the construction techniques and materials necessary in outside plant construction of<br />
electric supply or communication cable systems.The NESC is an American National Standard that has been written<br />
by a group of professionals that are concerned about the Standard’s scope and provisions. The NESC has been<br />
adopted by the American National Standards Institute (ANSI). All references to the NESC in this manual are from<br />
the 2002 edition.<br />
Special attention should be given to NESC Table 232-1, Vertical Clearance of Wires, Conductors, and Cables<br />
Above Ground, Roadway, Rail, or Water Surfaces which is reproduced in part on the next page.<br />
Copies of NESC standards can be obtained from:<br />
IEEE Service Center<br />
445 Hoes Lane/P.O. Box 1331<br />
Piscataway, NJ 08855-1331<br />
(800) 678-4333