Minimum Height for Power Lines: Rules and Clearances
Public roads and highways: 18 feet is the widely cited minimum for lines crossing roads open to truck traffic. For higher-voltage power supply conductors on the same crossing, the NESC
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Legal Height Optical Cables
Summary of NESC Clearances to Communication Cables see
** Fiber Optic Cables in the supply space (Rule 224A) will have the same required clearance to communication cables in the communication space as a multi-grounded neutral (Rule 235C)
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Application Guide for 2023 NESC Table 232-1
16 feet when providing service to a non-residential building (barn/shop). - 16 feet when crossing roads accessible to trucks. - 16 feet when crossing driveways, parking lots, and alleys. Barn likely to have
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Required Clearance for Electrical Lines Over Roads under National
The minimum required height clearances for electrical lines over roadways subject to truck traffic are below: 5 feet for communication wires (cable TV, phone, fiber optic cables, etc.). The
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Texas Administrative Code, Subchapter C, Section 21.41
The minimum vertical clearance above the highway at the largest vertical sag of the line is 22 feet for electric lines, and 18 feet for communication and cable television lines.
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SECTION 21.41. Overhead Electric and Communication Lines
The minimum vertical clearance above the highway at the largest vertical sag of the line is 22 feet for electric lines, and 18 feet for communication and cable television lines.
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43 Tex. Admin. Code § 21.41
The minimum vertical clearance above the highway at the largest vertical sag of the line is 22 feet for electric lines, and 18 feet for communication and cable television lines.
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Utils. Code Section 181.045
A municipal electric utility shall construct, operate, and maintain its transmission lines and distribution lines along highways and at other places in accordance with the national electrical safety code.
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Required Clearance for Electrical Lines Over Roads
The minimum required height clearances for electrical lines over roadways subject to truck traffic are below: 5 feet for communication wires (cable
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Table 1: Basic Minimum Allowable Vertical Clearance of Wires
sponding clearances shall be based upon the high water level. for other waters, the surface area shall be that enclosed by its annual flood level. the clearance over rivers, streams and canals shall be based
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What Is the Minimum Height for Telephone Lines?
For communication lines crossing public streets, highways, commercial driveways, and parking lots, the minimum vertical clearance is often set at 15.5 feet to 16 feet.
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