Originally Posted By: jhagarty
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Joseph Hagarty
Originally Posted By: jonofrey
This post was automatically imported from our archived forum.
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Inspection Nirvana!
We're NACHI. Get over it.
Originally Posted By: jtedesco
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| II. Wires and Cables Outside and Entering Buildings
800.44 Overhead Communications Wires and Cables Overhead communications wires and cables entering buildings shall comply with 800.44(A) and 800.44(B). (A) On Poles and In-Span Where communications wires and cables and electric light or power conductors are supported by the same pole or run parallel to each other in-span, the conditions described in 800.44(A)(1) through (A)(4) shall be met. (1) Relative Location Where practicable, the communications wires and cables shall be located below the electric light or power conductors. (2) Attachment to Crossarms Communications wires and cables shall not be attached to a cross-arm that carries electric light or power conductors. (3) Climbing Space The climbing space through communications wires and cables shall comply with the requirements of 225.14(D). (4) Clearance Supply service drops of 0?750 volts running above and parallel to communications service drops shall have a minimum separation of 300 mm (12 in.) at any point in the span, including the point of and at their attachment to the building, provided the nongrounded conductors are insulated and that a clearance of not less than 1.0 m (40 in.) is maintained between the two services at the pole. (B) Above Roofs Communications wires and cables shall have a vertical clearance of not less than 2.5 m (8 ft) from all points of roofs above which they pass. Exception No. 1: Auxiliary buildings, such as garages and the like. Exception No. 2: A reduction in clearance above only the overhanging portion of the roof to not less than 450 mm (18 in.) shall be permitted if (a) not more than 1.2 m (4 ft) of communications service-drop conductors pass above the roof overhang and (b) they are terminated at a through- or above-the-roof raceway or approved support. Exception No. 3: Where the roof has a slope of not less than 100 mm in 300 mm (4 in. in 12 in.), a reduction in clearance to not less than 900 mm (3 ft) shall be permitted. FPN: For additional information regarding overhead wires and cables, see ANSI C2-2002, National Electric Safety Code, Part 2, Safety Rules for Overhead Lines. |
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Joe Tedesco, NEC Consultant
www.nachi.org/tedescobook.htm
Originally Posted By: jhagarty
This post was automatically imported from our archived forum.
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Joseph Hagarty