AT&T 518-600-016 manual Frequency range Hz +/- 1 percent, Max. current amperes per power supply

	● Frequency range. 60 Hz +/- 1 percent
	●	Max. current. 3 amperes per power supply
	●	Max. power use. 225 watts per power supply
GROUNDING	The system must be connected to a properly grounded ac
REQUIREMENTS	outlet. See page 2-5, “System Grounding Requirements,”
	for more information.
	NOTE: If Modular Processor Data Modules, Modular
			Trunk Data Modules, or moderns are to be
			installed at the control unit location, additional
			grounded ac outlets will be needed.
WIRE LENGTH	Wires connected to the control unit should consist of a
LIMITATIONS	single continuous run, i.e., without extension cords or
	other splices, and should meet these specifications:
			Power cord. The power cord must be less than 6 feet,
			and must be connected to a properly grounded ac
			outlet that is not switch-controlled.
			Incoming lines. The distance from the network
			interface provided by the local telephone company for
			incoming lines must be spanned within one cord length
			(generally 25 feet or less).
			Jack field. The distance to the jack field mounted to
			the left of the earner must be
			Station. Each voice terminal must be within 1000 feet
			of the control unit.
			WARNING: If a voice terminal is used for In-Range,
			Out-of-Building (IROB) applications, IROB
			protectors are required. See “IROB Protectors” on
			page 2-126 for more information.

Preinstallation Requirements 2-3