scope:

Telecommunications network plant and customer structures or buildings covered

This standard covers the electrical protection to be applied to telecommunications network plant at entrances to customer structures or buildings. Electrical protection refers to the application of electrical protection devices, such as primary protectors and fuse links, and to the bonding and grounding of the telecommunications network plant and primary protectors. The electrical protection, bonding, and grounding criteria presented in this standard are intended to assist in protecting persons and property from the effects of lightning, electric power system faults, and Electromagnetic Interference (EMI) on the telecommunications network plant.

A customer location may consist of a single residential or commercial building, a multi-building complex or a campus-type environment. Also considered are mobile homes. The serving telecommunications network plant may be metallic paired conductor cable, optical fiber cable, coaxial cable, wire, rural radio, or a combination of the above.

Items not covered

The following items are not covered by this standard:

♦ Customer premises equipment;

♦ Secondary protection applied on the customer side of the demarcation point;

♦ Specific EMI mitigation designs;

♦ Surge protective devices applied to the serving ac power mains;

♦ Specifications for primary protectors (see IEEE C62.36¹));

♦ Telecommunications central offices and similar facilities (see T1.313¹);

♦ Telecommunications outside plant (see T1.316¹);

♦ Radio tower sites (see T1.334¹);

♦ Marinas;

♦ Recreational vehicles;

♦ Telecommunications network plant serving electric power stations (see IEEE 487™¹) and IEEE 1590™¹).

Application of electrical protection

The need for electrical protection is based on the electrical environment of the customer location, the telecommunications network plant, and the commercial ac power plant serving the customer. This standard defines, based on the electrical environment, the criteria necessary to determine when electrical protection is required. The electrical protection, bonding and grounding measures presented in this standard shall be used where electrical protection is required. Electrical protection measures exceeding those presented in this standard may be required by the authority having jurisdiction.

¹ See Annex A, bibliography, for more information on this standard.