Dielectric Testing
ABOUT DIELECTRIC TESTING
What is a di-electric testing service?
Dielectric testing is an inspection done to check the integrity of the insulation on electronic devices. In short, it verifies that:
- The peak voltage doesn’t exceed the capacity of the insulation.
- The user will be adequately protected from electrical hazards.
- There are no signs of damage, aging, or defects.
- The device complies with any related OSHA/ANSI standards.
During the test, your TLC professional will run a current of electricity into different parts of your machine—often at multiple locations/points—and measure the leakage (for passing tests) or voltage (for failed tests).
Once the test is complete, your technician will advise you on the best course of action to maintain the performance and safety of your equipment. They will also inform you on the steps you need to take to stay compliant with the relevant OSHA and ANSI standards of performance.
ELEVATE YOUR FLEET TO NEW HEIGHTS
Once your dielectric testing service is complete, we make it easy for you to keep your vehicles in top shape with these additional services:
BUCKET TRUCK REPAIR
- Aerial Inspection & Repair
- Alignment Service
- Fleet Maintenance

TOW TRUCK REPAIR
- Crane Repair
- Aerial Equipment Repair
- A/C Repair

BOOM TRUCK REPAIR
- Fiberglass Repair
- Hydraulic Replacement
- ANSI Inspections

DO YOU NEED A DIELECTRIC TEST?
If your business uses one or more bucket trucks or man lifts, it is mandatory for you to get regular DOT, Aerial, and Dielectric testing—usually on a yearly basis. These types of tests are also very important for tow trucks, boom trucks, and other commercial utility vehicles.
WHY IS A DIELECTRIC TEST IMPORTANT?
Professional dielectric testing on your bucket truck, manlift, tow truck, boom truck, utility truck, or other commercial vehicle is crucial to prevent serious safety issues—such as the injury or death of the operator or that of pedestrians surrounding the work site.
Annual testing is actually required by both OSHA and ANSI for many such vehicles. Failure to do so (or failure to repair any issues) is in direct violation of the regulations of both of these organizations. Be sure to research the specific requirements for your fleet to help your business stay compliant.
THE BENEFITS OF DIELECTRIC TESTING
REDUCED COST – Through regular testing and inspection, you can identify smaller issues with your commercial vehicles before they escalate, reducing the overall cost of repair, and the potential trigger of other, preventable and dangerous issues.
SAFER WORKSPACE – Dielectric testing can help you keep your vehicle running safely and correctly by identifying potential or existing electrical issues before they become more dangerous. This helps lower the risk to your operators and surrounding workers, as well as keep surrounding pedestrians safe.
BETTER COMPLIANCE – By regularly scheduling your dielectric testing, you can maintain your compliance with OSHA and ANSI regulations to keep your business in good standing and allow you to keep working without costly delays.
PREPARE FOR DIELECTRIC INSPECTIONS
While Dielectric testing is a requirement for your team, you can still make the process go as smoothly as possible with the following tips:
- Practice care
Keep each vehicle in good working order with preventative maintenance, inspections, and repair. Suggestions can be found in manufacturer’s guidelines, owners manuals, and in the guidelines for your affiliated regulatory agencies, such as OSHA and ANSI. - Stay compliant
Don’t drop the ball on another repair, no matter how busy you are. Keep a regular calendar of required testing deadlines, repairs, and other maintenance requirements—and sync the dates with your devices. - Keep organized
Encourage your operators to regularly inspect their vehicles, ideally before and after each trip. They should also promptly report issues, repairs, and concerns with management, so that they can be verified and addressed.
Time to give your vehicle some TLC
Did your recent Dielectric test reveal a problem with one or more of your vehicles? TLC Auto & Truck Repair Service Center is available to you! We are a family-owned shop that has been in operation since 1991—ready to provide excellent service, every time.
We provide a variety of 4 wheel drive repair services at TLC Auto and Truck Repair Service Center, including
