Figure 2-2. Measuring The Ac Outlet Voltages - AT&T MERLIN LEGEND Release 2.0 Installation Section

Installing the Control Unit

Figure 2-2. Measuring the AC Outlet Voltages

Phase to ground should be 110 to 125 VAC.
Neutral to ground should be less than 1 VAC.
Phase to neutral should be 110 to 125 VAC.
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.
2-10
Power and Grounding
N e u t r a l
Less than
2 . 5 V o l t s
110 - 125
Volts
P h a s e
( H O T )
G r o u n d
110 - 125
V o l t s