Verify Station Wiring and Voltage

To verify the station wiring, voltage readings and connection, follow these steps:

Tools Needed

	T10 Security screwdriver		Alligator clip leads or pass-through leads (optional)
	Solenoid Voltage Meter (Wiggy)		Digital Multi-Meter (DMM)

Station Wiring Checks

1. Using a T10 Security screwdriver, remove the screws fastening the faceplate to the bottom of the station.

   Retain the screws for reuse.

   

2. Lift the faceplate off the charging station.

   

3. Use a coin to unlock the wire cover.

   Do not use a screwdriver, to avoid damage to the wire cover.

   

4. Lift the wire cover off.

   

Verifying Voltages

1. Power on the station.

2. Test each wire relative to each other wire in the block, phase to phase, and phase to ground by adding the wiggy in parallel and noting the voltage, while there is current flowing (using the alligator clips or pass through leads, if available).
   

3. Insert the meter probes into the holes under each lever and check the input voltage as listed in the "Expected Voltage Readings".

   1. If the voltages are not as expected, ensure that the wiring has been properly connected. Refer to the detailed wiring diagrams below.

      
      

      (1) Main Breaker

      (2) Ground Bus

      (3) L1  

      (4) L2 

      (5) Ground

      (6) L1

      (7) L2

      (8) Input Terminal Block

      (9) Output Terminal Block

      (10) Local Service or Sub Panel

   2. For grounding requirements, refer to the CPF25 Data Sheet available at ChargePoint Product Reference Documentation.

4. Resolve any wiring issues and ensure that voltages are as expected.

5. Power off the station.

Expected Voltage Readings

The following table lists the expected input voltage measurements

Expected Input Voltage Measurements

Connection Points (Measure Between)	Volts (Nominal)
L1 – L2	208/240
L1 – GND Ground	120
L2 – GND Ground	120