Como existem pequenas diferenças dependendo do tipo de sistema de comunicação do qual estamos falando, precisaremos examinar algumas seções diferentes.

NEC 2008

Artigo 800 Circuitos de Comunicações

800.44 Overhead Communications Wires and Cables.
(A) On Poles and In-Span.
(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 non-grounded 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.

Artigo 810 Equipamento de Rádio e Televisão

810.13 Avoidance of Contacts with Conductors of Other Systems. Outdoor antennas and lead-in conductors from an antenna to a building shall not cross over open conductors of electric light or power circuits and shall be kept well away from all such circuits so as to avoid the possibility of accidental contact. Where proximity to open electric light or power service conductors of less than 250 volts between conductors cannot be avoided, the installation shall be such as to provide a clearance of at least 600 mm (2 ft). Where practicable, antenna conductors shall be installed so as not to cross under open electric light or power conductors.

Artigo 820 - Antena Comunitária - Distribuição de Televisão e Rádio

820.44 Overhead Coaxial Cables.
(B) Lead-in Clearance. Lead-in or aerial-drop coaxial cables from a pole or other support, including the point of initial attachment to a building or structure, shall be kept away from electric light, power, Class 1, or non–power limited fire alarm circuit conductors so as to avoid the possibility of accidental contact.

Exception: Where proximity to electric light, power, Class 1, or non–power-limited fire alarm circuit service conductors cannot be avoided, the installation shall be such as to provide clearances of not less than 300 mm (12 in.) from light, power, Class 1, or non–power-limited fire alarm circuit service drops. The clearance requirement shall apply at all points along the drop, and it shall increase to 1.02 m (40 in.) at the pole.

Artigo 830 - Sistemas de Comunicações de Banda Larga via Rede

830.44 Aerial Cables.
(C) Lead-in Clearance. Lead-in or aerial-drop network-powered broadband communications cables from a pole or other support, including the point of initial attachment to a building or structure, shall be kept away from electric light, power, Class 1, or non–power-limited fire alarm circuit conductors so as to avoid the possibility of accidental contact.

Exception: Where proximity to electric light, power, Class 1, or non–power-limited fire alarm circuit service conductors cannot be avoided, the installation shall be such as to provide clearances of not less than 300 mm (12 in.) from light, power, Class 1, or non–power-limited fire alarm circuit service drops. The clearance requirement shall apply to all points along the drop, and it shall increase to 1.02 m (40 in.) at the pole.

tl; dr.

Telefone (Sistemas de Comunicação)

• 12 "(300 mm) em qualquer ponto da extensão.
• 12 "(300 mm) no ponto de conexão.
• 40 "(1 m) no poste de serviço.

Antena (equipamento de rádio e televisão)

• Se mantido, se possível.
• não deve cruzar ou sob.
• 2 '(600 mm) se a proximidade não puder ser evitada.

Cable (Televisão Comunitária e Distribuição de Rádio)

• Se mantido, se possível.
• 12 "(300 mm) se a proximidade não puder ser evitada.
• 40 "(1,02 m) no poste de serviço.

Banda Larga (Sistemas de Comunicações de Banda Larga via Rede)

• Se mantido, se possível.
• 12 "(300 mm) se a proximidade não puder ser evitada.
• 40 "(1,02 m) no poste de serviço.