The document discusses earthing and surge suppression concepts, including a telecommunications reference conductor (TRC) distribution system that may consist of a telecommunications facility earth electrode (TFEE), telecommunications facility earth (TFE) conductor extending earth from the TFEE to an earth bar, and TRC conductors extending from the earth bar to communication space separators (CSS) or communication enclosures (CE). It refers the reader to Technical Standard TS 009 figures 1 through 4 for details on connecting a TRC.

1. Topic 5: Earthing and surge suppression concepts
TRC CES
Telecommunications Communications
Reference Earthing
Conductor System
Fig 6: TRC and CES

2. Topic 5: Earthing and surge suppression concepts
A TRC distribution system may consist of the following:
•TFEE where required
•TFE conductor, estending the earth from the TFEE to the
earth bar at the CD/BD
•TRC conductors extending from the CD/BD earth bar
direct to a CSS or CE, or to FD earth bars and subsequent
Fig 7: Telecommunications reference conductor (TRC)

3. Topic 5: Earthing and surge suppression concepts
Refer to Technical Standard
TS 009
Figures 1 to 4 for details on the connection of TRC
Fig 8: Bonding via a differential earth clamp