Electrical Design

The wall mount CPF32 installation uses surface mount wiring. The pedestal mount CPF32 installation requires service wiring installed underground. (If a pedestal mount installation requires surface run conduit, contact ChargePoint before beginning work to obtain an approved installation method.) Conduit and wire size are determined based on the length of the runs from the electrical panel to the station location. Consult all applicable codes or a project engineer to determine the grade, quality and size of the conduit or cable. The CPF32 Concrete Mount Kit accommodates service wiring through the flare, conduit or locally appropriate wiring method.

Power Supply Requirements

The CPF32 can accept wire sizes from 4 mm² to 16 mm². Typically, 10 mm² wire is used.

When planning multiple EV Electric Vehicle charging stations, it is best practice to separate non-continuous from continuous loads, with all branch circuits for EV Electric Vehicle charging on a dedicated electrical panel assembly with adequate circuit breakers. When sizing new electrical panels dedicated for EV Electric Vehicle charging, all branch circuits must support continuous load.

Conduit

The outside diameter of conduit must not exceed the sizes called out in the conduit layout drawing: 45 mm. Conduit stub-ups must not extend higher than 660 mm above grade. For wall-mounted stations, flex conduit is recommended to bring the wire to the station.

Wiring Requirements

For full product specifications, refer to the CPF32 Datasheet. Using that data, ensure that the installation location is equipped with service wiring that supports the CPF32’s power requirements:

• AC conductors – Live (L1) and Neutral (L2)

• Ground conductor

When pulling electrical wiring for CPF32 pedestal mount, ensure that at least 1.5 m of wire remains above grade.

When pulling electrical wiring for wall-mounted stations, the conduit and wire must be brought to the location where the stations will be mounted. Flex conduit may be used to bring the wire to the station. For wall-mounted installations, the cable is brought in from the rear or bottom of the station, depending on configuration. For pedestal installations, the wiring must be brought up through the pedestal into the back of the station via the bracket. The CPF32 has a 21-mm knock-out in the bottom and the rear of the charging station. Entering the station, the cable diameter must not exceed 27 mm.

Meeting Power Supply Requirements

The charging station is designed for connection to and operation on rated voltages of 230 V at 50 Hz.

• Comply with all regulatory requirements for low voltage installations according to IEC 60364-1 and IEC 60364-5-52.

• Always connect the device to the protective earth conductor of the power source.

• Reserve a power source exclusively for the charging station and ensure that it complies with HD 60364-7-722:2012.

• Protect the charging station branch circuit in the panel (mains) with a suitable miniature circuit breaker (MCB Miniature Circuit Breaker).

Consult your electricity grid operator regarding requirements for local regulations. Depending on the desired rated power, the installation of the charging station may require registration with and/or approval by your electricity grid operator.

Grounding Requirements

The CPF32 must be connected to a grounded, metal, permanent wiring system. An equipment- grounding/protective earth conductor can be run alongside live conductors and must be connected to an equipment-grounding/protective earth terminal on the CPF32. A grounding/protective earth conductor that complies with applicable electrical codes must be properly grounded to earth at the service equipment or, when supplied by a separate system, at an appropriate earth electrode.

Wiring Diagram

The following illustration describes the wiring for installing a CPF32.

(a) Neutral bus

(b) Ground bus

(c) Main breaker