7-4
Powering Up the System
7.2 Measure the AC Power
With a digital multimeter, check the AC power supplied at the re-
ceptacle at the installation site.
Figure 7-2
Measuring System Power
BXB-0040-92
GND
V
V
V
PHASE Z
PHASE X
NEUTRAL
PHASE Y
50-60 Hz (120/208 V NOMINAL)
NEMA L21-30R
A
PHASE 2
PHASE 3
NEUTRAL
PHASE 1
GND
V
V
V
50-60 Hz (380-415 V NOMINAL)
IEC 309 TYPE
C
50-60 Hz (202 V NOMINAL)
NEMA L21-30R
GND
V
V
V
PHASE Z
PHASE X
PHASE Y
B