AT&T 3.0 manual Central Office and AC Grounds

AC Power and Grounding

To Central	Lines				DIW or	CO
		CO
				Network
Office or		Line			25-Pair Cable	Wiring
Serving		Protector		Interface		Field
Facility
				Coupled Bonding
				Conductor (optional)				D2R
								Cords
			(Power)
			(Supply)				I

Commercial

Power

#12 or #14					A	C
AWG				Plug	Outlet
Ground									B	Power
Wire						Single -
									W	Service
						Point
#6			AWG
								GND (Green)
						Ground
		Ground				Bar
			Wire				Shield
							Ground
	Earth			Power
				Ground
	Ground	Bond		Rod
		Wire

Figure 2-3. Central Office and AC Grounds

Installing the Control Unit 2-11