Electric vehicles navigate cities and towns with efficiency. As more drivers switch to EVs, reliable charging stations become increasingly crucial. A charger must do more than just deliver power—it must operate safely, comply with regulations, and run smoothly daily.
Without regular inspections, wires can fray, components may loosen, and potential hazards can develop. Our EV charging station inspection identifies these issues before they become problems. We verify that every charger that we install meets Singapore’s safety standards and remains ready for use. Regular inspection is essential to keep your charging station safe and reliable.
An EV charger inspection involves checking and testing a charging station to ensure it works safely. Our team examines the charger and the electrical works and ensures that it remains safe, reliable and in working condition.
Singapore follows a standard called TR25:2022. It explains how to install, test, and inspect EV chargers. The Land Transport Authority (LTA) and the Energy Market Authority (EMA) check if everything follows these rules.
Here is what you need to do:
These steps help protect people and avoid problems.
We check every part of the charger to ensure it is safe and works well. Here is what we inspect:
Electrical Safety
Our EV charging station inspection confirms that all electrical parts handle power without overheating, short-circuiting, or posing a risk. We examine connections, fuses, and protection systems to ensure every charger operates safely during daily use and prevents shocks, burns, or power-related incidents.
Earthing & Bonding
Earthing and bonding allow excess electricity to flow into the ground safely. We inspect these systems to ensure that they channel faults correctly, prevent energy buildup, and protect users, vehicles, and nearby structures from electrical discharge or unexpected current leaks.
Functional Performance
A charger must deliver power properly under normal conditions. We test charging speed, response time, and startup sequence. Verifying performance features ensures the station functions smoothly, prevents failure, and provides consistent service with each charging session.
Cable Condition
Cables wear out over time. We examine insulation, flexibility, and surface quality to find cracks, fraying, or internal faults. Our team identifies early damage signs, helping prevent malfunctions, sparking, or interruptions during vehicle charging.
Communication Protocols
EV chargers must exchange data with the vehicle and system. We verify signals are transmitted correctly, detect protocol mismatches, and confirm compatibility. Reliable communication ensures smooth charging, billing accuracy, and proper operation of smart functions like load balancing where applicable.
Load Simulation & Waveform Analysis
We simulate real charging conditions using specialised instruments and observe how the charger reacts. We analyse waveform patterns to detect current flow, voltage delivery, and timing irregularities. These findings help identify hidden faults before they affect daily use.
We follow a structured approach during every maintenance session to ensure your EV charger performs safely, reliably, and in line with local regulations.
Our equipment specialists perform hands-on checks for EV charging station inspection to confirm that your charger setup is both safe and compliant.
Next, we confirm the charger is working properly:
We carefully inspect and tighten all electrical connections from the isolator to the charger, reducing risk of overheating or loose contact.
Our LEW team performs detailed checks to validate the safety and compliance of the electrical system behind your EV charger.
We measure how quickly electricity will disconnect in the event of a fault. This ensures the system responds fast enough to prevent harm.
We press the test button on the Residual Current Circuit Breaker (RCCB) to confirm it’s not faulty. We also ensure the Earth Leakage Circuit Breaker (ELCB) trips in under 300 milliseconds.
We check for short circuits or insulation breakdown, ensuring wires are in good condition and safe from internal faults.
We verify the voltage levels of your supply:
For single-phase systems, we expect 230V For three-phase systems, we measure between L1-L2, L1-L3, and L2-L3, each expected at 400V
We test the sequence of electrical phases to confirm the correct clockwise rotation — essential for three-phase setups to operate correctly.
This maintenance process is designed to keep your EV charger in optimal condition, protect users, and align your setup with Singapore’s TR25 standards. We perform these checks with care, clarity, and commitment to safety.
Charger maintenance schedules vary depending on the location’s access type. We categorise these as Non-Restricted Access (NRA) and Restricted Access (RA).
| Access Type | Typical Locations | Recommended Frequency |
| NRA (Non-Restricted Access) | Commercial buildings, condominiums, public charging stations, and locations that fall outside of Restricted Access definition. | Equipment Specialist Maintenance: Every 6 months LEW Inspection: Every 12 months |
| RA (Restricted Access) | Private landed residential properties with carparks directly connected to the home | Equipment Specialist Maintenance: Every 24 months |
To qualify as RA, the EV charger must be installed in a carpark attached to your landed property. Condos and apartments, even if privately owned, fall under NRA. In rare cases, landed homes with detached carparks are also considered NRA due to limited access control.
| Prevent Fire or Electric Shock | Extend Charger Life | Avoid Fines or Legal Trouble | Assure Reliability to Users |
| Regular inspection identifies loose wires, overheating parts, or faulty circuits before they turn into serious issues. It keeps the electrical system safe and lowers the risk of unexpected sparks, shocks, or fires at both residential and commercial charging points. | Consistent checks protect the internal parts of the charger from early wear. When components stay clean,tight, and undamaged, the entire system lasts longer, reducing the need for expensive repairs or replacements. | Avoiding inspection could violate local rules under TR25:2022. Businesses and property owners may face fines, stop-work orders, or penalties if they fail to comply. Following inspection schedules helps owners stay both legally and operationally safe. | Drivers rely on stable, quick charging. A properly maintained station builds confidence, reducing the probability of sudden breakdowns. Whether at home or in public spaces, reliability boosts confidence, and trust brings repeat use from regular EV drivers. |
All EV charger inspections are carried out by certified Equipment Specialists and endorsed by Licensed Electrical Workers who understand Singapore’s strict regulatory framework. Their training ensures every charger complies fully with safety standards, protecting users and property.
3K Construction works confidently with leading EV charger brands such as Schneider, Wallbox, Autel, HiCi, ABB and more. This allows us to perform precise inspections across various hardware configurations, ensuring compatibility, performance, and safety across different installation types.
Inspections are completed using calibrated instruments and procedures that follow industry standards. These globally recognised benchmarks ensure every inspection delivers reliable, accurate, and trustworthy results for total peace of mind and professional confidence.
Clients receive timely inspection services without inflated costs. Transparent pricing, efficient workflows, and short report delivery times help keep operations on track, while ensuring full compliance without delays, especially for commercial or high-traffic EV charging stations.
Let 3K Construction handle your charger check from start to finish. We offer site checks, reports, and expert help to keep your station safe. Call to book a schedule for your EV charger inspection with our licensed team.
TR25:2022 is Singapore’s technical reference document that explains how to install and test EV chargers. Our inspection process follows this rulebook to ensure safety and performance.
We usually finish in approximately 1 hour for 1 charger, depending on how many chargers we check. After that, we will issue the relevant Form A or Form D.
If the charging setup fails inspection, we will share a report with you highlighting which part did not meet regulations or if any electrical issues were found. These issues must be resolved before we can issue the required Form A or Form D endorsement.
EV charger inspections should only be carried out by qualified professionals. We recommend engaging a company that is active in the EV industry to ensure the inspections are carried out safely with proper equipment and in line with the latest regulations.
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