3
2. Electrical Requirements
Wiring Diagram
Connect the charger to a single phase 120/240 volt, bonded neutral power source. All wire must be sized in
accordance with the National Electric Code.
Electric vehicle charging stations must be equipped
with an internal Ground Monitor/Interrupter circuit
(GMI circuit). For the GMI circuit to function, a
reference to ground must be made through a main
bonding jumper or system bonding jumper (located
where the neutral connection is established and
bonded to ground). Without the neutral to ground
connection, GMI protection is not possible, and the
charger will be inoperable.
If you have an electrical system without a neutral you
must upgrade your electrical service from the utility
or provide a separately derived system to effectively
power and protect the electric vehicle charger.
Wiring To System
Current Limit
2-Pole Breaker Size
NEMA 14-50 Plug
Hardwired
16 AMPS (default setting)
20 AMP
YES
YES
24 AMPS
30 AMP
YES
YES
32 AMPS
40 AMP
YES
YES
40 AMPS
50 AMP
YES
YES
48 AMPS
60 AMP
NO
YES
50 AMPS
70 AMP
NO
YES
