EV Charging Station Installation Guide
2
Rev.201901
This guide assumes that the appropriate wiring, conduit and circuit protection is in place at the
installation site. Review this entire document to understand the installation process before installing
the SemaConnect
TM
Charging Station.
Key Requirements
•
Each EV charging station shall be on a
dedicated electrical circuit.
•
Each station shall be protected with a
40 Amp 2-pole common trip circuit breaker (non-
GFCI type).
•
Each station is designed to draw a
maximum of 30Amps.
•
Each station can operate on either a
240V or 208V circuit.
•
Each station requires
three electrical supply wires
(two hot, one ground, no neutral).
•
All data communication is wireless, so there is
no data cabling
to install, but cellular
communication is required.
Wiring Diagram
Connect SemaConnect
TM
stations to any one of the power source as shown
•
208 VAC three phase , Delta system, Center tap grounded
(use only two phases)
•
208 VAC three phase, Wye system
(use only two phases)
•
240 VAC single phase
In a delta system, connect the SemaConnect
TM
station only to a center-tapped grounded transformer
only as shown below. Connect the station to the side where ground is bonded (in figure C line A and
C). This allows voltages to remain constant regardless of other loads that may be using the lines.
Please do not connect to other type of power sources shown below.
