and fuses are omitted as provided in Section 800-31(a); or

(4) meet the requirements of Section 800-12(a) above and are used to extend circuits to a building from a cable having a grounded metallic sheath. Raceways or bushings shall slope upward from the outside or, where this cannot be done, drip loops shall be formed in the communications wires and cables immediately before they enter the building. 70-794 NATIONAL ELECTRICAL CODE Raceways shall be equipped with an approved service head. More than one communications wire and cable shall be permitted to enter through a single raceway or bushing. Conduits or other metal raceways located ahead of the primary protector shall be grounded. 800-13. Lightning Conductors. Where practicable, a separation of at least 6 feet (1.83 m) shall be maintained between open conductors of communications systems on buildings and lightning conductors. C. Protection 800-30. Protective Devices. (a) Application. A listed primary protector shall be provided on each circuit run partly or entirely in aerial wire or aerial cable not confined within a block. Also, a listed primary protector shall be provided on each circuit, aerial or underground, so located within the block containing the building served as to be exposed to accidental contact with electric light or power conductors operating at over 300 volts to ground. In addition, where there exists a lightning exposure, each interbuilding circuit on a premises shall be protected by a listed primary protector at each end of the interbuilding circuit. Installation of primary protectors shall also comply with