Pricing & FAQs
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Maintenance, or a Free Quote.
$199 + Tax
BASIC
PACKAGE
EV CHARGING STATION
PE (Protective Earth) pre-test to ensure no dangerous voltage is present
◦ Safety Testing
◦ Performance Testing
◦ Station Troubleshooting
◦ Charging Station (EVSE) Reports
&
◦ Critical Protective Ground Testing
◦ Pass/Fail Indications on all
Measurements
◦ GFCI Testing for 6 and 20 mA GFCI circuits
◦ Protective Earth (PE) pre-test
◦ In sure no dangerous voltage is present
◦ Visual inspection
◦ GFCI Trip Test
◦ Nominal Voltage
◦ Auto Control Pilot (CP) with waveform analysis
◦ Error Testing
◦ Proximity Pilot
◦ Manual Control Pilot
◦ Advanced GFCI Testing
Industry-Standard EVSE Testing, Full Reporting, and Verified Certification Included
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CERTIFIED
Let’s Talk About Your EV Charging Needs
Reliable Service Starts Here.
$249 + Tax
ADVANCED PACKAGE
EV CHARGING STATION
PE (Protective Earth) pre-test to ensure no dangerous voltage is present, plus
Insulation Testing for EV Charging Wire
and
◦ Safety Testing
◦ Performance Testing
◦ Station Troubleshooting
◦ Charging Station (EVSE) Reports
&
◦ Critical Protective Ground Testing
◦ Pass/Fail Indications on all
Measurements
◦ GFCI Testing for 6 and 20 mA GFCI circuits
◦ Protective Earth (PE) pre-test
◦ In sure no dangerous voltage is present
◦ Visual inspection
◦ GFCI Trip Test
◦ Nominal Voltage
◦ Auto Control Pilot (CP) with waveform analysis
◦ Error Testing
◦ Proximity Pilot
◦ Manual Control Pilot
◦ Advanced GFCI Testing
Industry-Standard EVSE Testing, Full Reporting, and Verified Certification Included
FAQ
Frequently Asked
+ When Should You Perform Advanced Certification & Testing?
• Commissioning / New installation
• Annual or semi-annual preventive maintenance
• Troubleshooting a tripping charger
• After repairs or firmware updates
• When certification or compliance is required
+ How often should an EV charger be inspected for safety?
Outdoor installations, high-usage locations, and commercial sites benefit from annual inspections to ensure safe operation, prevent overheating, and catch wiring or grounding issues early.
+ What tests are included in a certified EV charger inspection?
A full CertPro EV inspection includes:
-
Voltage, amperage, and grounding tests
-
GFCI and circuit protection verification
-
Thermal and load analysis
-
Connector, cable, and plug condition checks
-
Internal diagnostics using certified diagnostic tools
-
Compliance check with CSA, ESA, and manufacturer standards
You receive a detailed written report with all findings and recommendations.
+ Are all EV charger brands compatible with your diagnostic tools?
Yes. Our certified equipment supports all major charger brands available in Canada, including FLO, ChargePoint, Grizzl-E, Tesla Wall Connector, Emporia, Leviton, and JuiceBox.
We can test, diagnose, and certify both Level 1 and Level 2 systems in residential, commercial, and municipal environments.
+ What are the signs that my EV charger may need maintenance?
Common warning signs include:
-
Slower-than-usual charging
-
Frequent charging interruptions
-
Overheating cables or plugs
-
Error lights or unexplained shutdowns
-
Breakers tripping during charging
If you notice any of these, a diagnostic check is recommended.
+ Do you offer emergency support for charging station failures?
Yes. CertPro EV provides priority troubleshooting and diagnostics for urgent charger failures that prevent safe vehicle charging.
We aim to restore operation as quickly as possible or recommend safe alternatives if repairs are required.
+ Do you provide certification documents for insurance or permitting?
Absolutely. After inspection, we issue a certified report that can be used for insurance records, workplace compliance, commercial site approvals, or real estate transactions.
FAQ
Advanced GFCI Testing for EV Charging Stations
+ What Is Advanced GFCI Testing?
Advanced GFCI testing goes beyond a simple push-button test.
It evaluates the charging station’s internal protection circuitry using controlled fault simulations to confirm the GFCI:
• Trips at the correct leakage current
• Responds within the required time
• Detects various fault types (AC & DC leakage)
• Follows SAE J1772 & CSA/UL standards
+ Why It’s Important for EV Charging Stations
EVSE units must detect ground-fault currents quickly to prevent:
• Electrical shock
• Equipment damage
• Fire hazards
• Failure of the charging session
• Liability and code violations
Most Level 2 EV chargers require ground-fault protection at 20–30 mA, depending on the model and standard.
+ What Advanced GFCI Testing Includes
✔ AC Leakage Current Injection
Simulates different fault levels (e.g., 5 mA to 30 mA) to verify:
• Sensitivity
• Trip current accuracy
• Repeatability
✔ DC Leakage Fault Simulation
Required for EVSE with DC fault monitoring:
• Ensures detection of DC residual currents
• Confirms RCD Type A + DC sensing or Type B operation
✔ Trip Time Measurement
Confirms the EV charger disconnects within standards-required milliseconds.
✔ Auto CP (Control Pilot) Interaction
Evaluates how the control pilot signal reacts during fault simulation, ensuring:
• Proper shutdown
• Correct error signaling to the vehicle
• No unsafe reconnection
✔ Proximity Detection Safety
Checks if the charging handle disconnects safely during a fault.
✔ Reset Behavior
Verifies:
• Automatic reset (if enabled)
• Manual reset
• No false resets
• Charger does not restart under dangerous conditions
+ Professional Tools Used
• EVSE diagnostic testers
• Simulated load banks
• Leakage current injectors
• Waveform capture tools
These tools create realistic ground-fault scenarios without damaging the charger.
+ When Should You Perform Advanced GFCI Testing?
Recommended during:
• Commissioning / new installation
• Annual or semi-annual preventive maintenance
• Troubleshooting a tripping charger
• After repairs or firmware updates
• When certification or compliance is required
+ Key Safety Standards
• UL 2231 / UL 2594
• CSA C22.2 standards
• NEC 625 & CEC Section 86
• SAE J1772
• IEC 61851 (international)
+ Results You Should Document
• Trip current (mA)
• Trip time (ms)
• AC and DC fault behavior
• Control pilot response
• Reset behavior
• Pass/Fail conclusion
FAQ
What Is Auto-Control Pilot
(Auto-CP) Analysis?
Auto-Control Pilot Analysis is a diagnostic test performed on EV charging stations (EVSE) to automatically evaluate the behavior, accuracy, and safety of the Control Pilot (CP) signal during different charging states.
The Control Pilot is the communication line between the EVSE and the vehicle.
It tells the car:
• When it’s safe to charge
• How much current is available
• Whether a fault is present
• When to start or stop charging
+ What does the Auto-CP Test Actually Check?
The CP wire uses different voltage levels (±12V) to indicate:
| State | CP Voltage | Meaning |
| State A | +12V | No EV connected |
| State B | +9V | EV connected, not ready |
| State C | +6V | EV ready, ventilation not required |
| State D | +3V | EV ready, ventilation required |
| State E | 0V | No power allowed (fault) |
| State F | –12V | Emergency |
+ Auto-CP analysis checks if the charger produces the correct voltages.
Duty Cycle Accuracy (Charging Current Signal)
The CP signal includes a PWM (pulse-width-modulation) duty cycle.
This duty cycle tells the EV how many amps it is allowed to draw.
Example:
• 16% duty cycle ≈ 10 A
• 50% duty cycle ≈ 30 A
• 80% duty cycle ≈ 48 A
Auto-CP analysis measures:
• Duty cycle accuracy
• Frequency stability (usually 1 kHz)
• Whether the advertised amperage matches the real CP signal
+ Dynamic Charging State Changes
• A → B → C → D
(simulating plugging in, EV ready, ventilation mode)
It checks:
• Does the EVSE respond correctly?
• Does it switch to charging mode?
• Does it provide correct pilot values?
+ Fault Simulation & Response
• Ground fault
• CP interruption
• CP short to PE/ground
• Incorrect voltage levels
• Incorrect duty cycle
It checks if the EVSE:
• Shuts down safely
• Sends correct error messages
• Locks out charging if necessary
+ Waveform Analysis (Oscilloscope)
Advanced testers show:
• CP waveform shape
• Noise
• Distortion
• Overvoltage/undervoltage
• PWM irregularities
Why Auto-Control Pilot Analysis Is Important
✔ Ensures safe communication between EV & charger
✔ Verifies the charger advertises correct available current
✔ Confirms compliance with SAE J1772, UL 2231, IEC 61851
✔ Helps diagnose charging issues
✔ Protects from overcurrent, overheating, and faults
✔ Essential for commissioning and preventive maintenance
Auto-Control Pilot Analysis checks whether the EV charging station communicates properly with the vehicle.
It automatically tests:
• Connection detection
• Charging readiness
• Allowed current
• Safety signals
• Fault response
It ensures the charger is safe, accurate, and ready to operate.
FAQ
Isolation Resistance Test – EV Charging Cable
✅ What Is It?
An Isolation Resistance Test checks how well the live conductors (L1/L2), neutral, and control wires inside an EV charging cable are electrically isolated from the ground (earth) and from each other.
It ensures that:
No current leaks to ground
No wires are touching each other
The insulation covering each conductor is strong and safe
This test is usually done with a megohmmeter (megger).
+ Why Is It Important? Safety for the User
Safety for the User
If insulation is damaged, electricity can:
Leak to the vehicle body
Leak to ground
Cause electric shock
Good isolation resistance prevents these hazards.
+ Safety for the EV and Charger
Low insulation resistance can:
Damage the EV onboard charger
Damage the charging station electronics
Trigger charging faults (CP or PP errors)
+ Ensuring Code & Standard Compliance
IEC 61851
SAE J1772
UL certifications
All require proper isolation resistance (often >1 MΩ, but usually >5–10 MΩ is ideal).
+ Detecting Early Cable Damage
Crushed cable sections
Water inside the cable
Broken insulation
Rodent damage
Heat damage
These problems often happen before a cable completely fails.