MDF connections to stations and the public switched telephone network
Installing the coupled bonding conductor
The coupled bonding conductor (CBC) provides a path to ground for transient energy (for instance, lightning) by virtue of mutual inductance between itself and exposed telcom cables. The CBC connects on one end to an approved
The CBC can be:
●a 10 AWG (#25) (6 mm2) wire tie wrapped to the exposed telecom cables
●a metal cable shield around the exposed cables, or
●six spare pairs form the exposed cable
A minimum of 12" spacing should be maintained between the CBC and other power, ground, or
Installing coupled bonding conductor wires
To install coupled bonding conductor wires:
1.At the DC power cabinet, connect a 10 AWG (#25) (6 mm2) ground wire to the Ground Discharge Bar. See Figure 27: Typical power and ground for a DC power cabinet on page 59.
2.Route the 10 AWG (#25) (6 mm2) ground wire to the CBC ground terminal bar at the MDF.
3.Tie wrap the ground wire to the inside wiring cable.
