AT&T MERLIN LEGEND Installation & Maintenance Manual page 124

Installation
Connect the Control Unit to an AC
Outlet
CAUTION:
Be sure the AC outlet has been tested for proper grounding
by following the procedures in Chapter 2 under "AC Outlet
Tests." The outlet should be 117-VAC, 60-Hz, 3-wire
grounded.
CAUTION:
To prevent someone from accidentally shutting off the
power, do not connect the CU to a switch-controlled outlet.
The AC outlet should be within 5 feet of the CU.
Follow these steps to connect the CU to an AC outlet:
1. Turn the switch on the power supply module in the basic
carrier to the OFF position.
2.
Turn off the power switches on the expansion carrier power
supply modules.
3. Unplug any auxiliary power units.
4. Plug one end of the power cord into the AC INPUT connector
just below the power switch on the front of the power supply
module. Do this for each carrier.
5. Plug the other end of the power cord into the AC outlet. Allow
at least 1 foot of slack in the cord. Do this for each carrier.
CAUTION:
Do not attach the power cord(s) to any building surfaces.
3-16 The Control Unit