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9
Power Xpress™ Dual Bollard Charge Station
Installation Guide
576414 Rev. A
NOTE: The third line (L3 on the illustration of the
delta) is 208V, with respect to the neutral,
and is sometimes referred to as a “stinger.”
WARNING: Do not use this third line.
NOTE: The two used phases must each measure
120V to neutral or ground.
NOTE: Consult the utility company or the trans-
former manufacturer’s literature to verify
that the single leg can supply the required
power.
NOTE: The EVSE will only operate properly if it de-
tects the presence of a ground wire con-
nected to a neutral point on the transformer
secondary.
WARNING: Do not use a 3-phase delta-
connected transformer secondary
without a center tap on one leg and/or
without a neutral point available for the
required ground connection.
240V 3-Phase Delta Connection (North
America) with Center Tap on One Leg
One leg must be center-tapped, and only the two
phases on either side of the center tap can be used
with the delta connection.
L3
(NOT USED)
L1
CENTER TAP
L2
120V
120V
NEUTRAL
(NOT USED)
L1
240V
L2
GND
Figure 3. 240V 3-Phase Delta Connection