Troubleshooting
5-7
Checking voltages
Use a solenoid type voltage tester (sometimes
referred to as a “Wiggy”) to check the charging
station’s voltages at the terminal block. This type
of tester will draw sufficient current to expose a
poor connection.
Wiring problems include mis-wired or open lines,
open neutral, open ground, or an unbonded
neutral.
To determine if the station has been properly
wired, note the following:
• Neutral and Ground MUST be bonded at some
point in the AC supply. This is usually done at
the transformer, the main panel, or at a
sub-panel.
• The voltage between Neutral and Ground must
measure less than 4 volts. An unbonded
neutral will result in excessive voltage between
neutral and ground, causing lower voltage on
one side of the 208/240 volt lines.
• The voltages between each line and Ground
must measure within 8 volts of each other
Check the tables below for your specific station
model number to verify the voltages are as
expected. If the voltages are not as expected,
follow the instructions in the installation guide to
ensure that the wiring has been properly
connected.
NOTE:
• It is imperative that Neutral and Ground be
bonded at some point in the AC supply. This is
usually done at the transformer, the main
panel, or at a sub-panel.
• At the service panel, the voltage between
Neutral and Ground must measure less than 4
volts.
• The voltages between each line and Ground
must measure within 8 volts of each other.
#1
208/240 VAC
L1 L2
GND
Input 1: 208/240 VAC, 60HZ, 30A, 1Ø
Input 2: 208/240 VAC, 60HZ, 30A, 1Ø
Use Min. 90
o
C copper condutors only.
Input terminal recommended tightening torque:
18.5 in.-lbs (2.1Nm)
Input terminal wire size range:
6 to 10 AWG (13mm
²
to 5.3mm
²
) solid / stranded.
SEE INSTALLATION GUIDE.
#2
208/240 VAC
L2 L1
WARNING: Risk of Shock. Two Power Sources.
Disconnect Both Power Sources Before Servicing
AVERTISSEMENT: Risque de choc électrique. Alimentations multiples.
Couper le deux circuits d'alimentation avant intervention.
LEVEL 2 CORE
#2
Measure both sides (#1 and #2)
Measure Between
Volts
L1 and L2
208/240
GND and L1
120
GND and L2
120
