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From Cable TV Systems in the USA


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Drop control box1508 viewsThe drop control box is located so as to require the installers and techs to have to place their ladders next to power, and work within just a few inches of the power drop at the weather head. Also notice that the ground wire from the box runs to the old light fixture above, rather than to the mast of the power drop.
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Attachment to power mast1447 viewsA typical but improper attachment to the power mast above the roof. NEC prohibits the attachment of a drop to an above-roof mast that contains electrical conductors.
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It is such an obvious attachment point. Why shouldn't I use it??1714 viewsCable drop attached to the power mast above the roofline and in close proximity to the power conductors. NEC 820-10(b) requires a minimum of 12 inches of clearance from the wires, and NEC 820-10(c) prohibits the attachment to a riser that contains electrical conductors.
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Ground to power mast drop bracket418 viewsIn this photo, the installer loosened a nut on the back of the power drop attachment bracket and wrapped his ground wire around it. This is a violation of the NEC.
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Drops attached to pole well above CATV level1131 viewsCable drops in this picture are attached to the pole about 2-3 feet above the cable strand level and well within the area reserved for power clearance.
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I do believe the cable drop is using the power attachment!1008 viewsViolates the NEC. Drop within 12" before the attachment; within 12" at the attachment; within 4" after the attachment; attached to the power mast above the roof.
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Cable drop attached to a power mast above the roof...843 views...and below the roof, too! Violates the NEC.
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Just a tad but too close to power, don't you think?1117 viewsMultiple violations of the National Electrical Code. First, the cable and power drops are less than 12" apart prior to the attachment. At the attachment they're less than 12" apart. The drop is attached to the power riser above the roof. There's more, but I'm out of room.
 
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