Measuring The Ac Outlet Voltages - AT&T MERLIN LEGEND Release 3.1 Installation Manual

AC Power and Grounding
Using an Ideal 61-035 Circuit Tester (or Equivalent)
1 Plug the circuit tester into the outlet that you want to test.
If the circuit is properly grounded, the yellow and white lights on the tester
turn on.
2 Unplug the circuit tester.
Using a Volt-Ohm Milliammeter (VOM)
1 Set the VOM to the lowest scale on which you can read 130 V AC.
2 Measure the AC outlet voltages. See Figure 2–2.
Phase to ground should be 110 to 125 V AC.
Neutral to ground should be less than 1 V AC.
Phase to neutral should be 110 to 125 V AC.
Less than
1.0 Volt AC
Figure 2–2. Measuring the AC Outlet Voltages
!
WARNING:
If the voltage readings do not measure the values required, the AC
outlet is improperly wired—do not install the system. Advise the
customer to have a licensed electrician correct the problem.
110 - 125
Volts AC
Phase
Neutral
(HOT)
Ground
Installing the Control Unit
110 - 125
Volts AC
2–9