How to perform an Insulation Resistance Test (Meg Test) – BARTEC

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Only properly trained personnel should administer this test. On the video above, we conduct a meg test on BARTEC's self-regulating HSB heating cable. In preparation for the measurement, use the appropriate PPE, follow all safety guidelines, and, if applicable, de-energize the heating circuit. We will start the preliminary test with a cable still on the reel.

Step 1: Safely strip the cable exposing the conductors.

Step 2: Connect the black test lead to the grounding braid and the red test to both bus wires.

Step 3: Perform the insulation resistance test for one minute. A passing test should be at a minimum of 20 megohms.

Step 4: Record the test values. This cable is now ready to be installed.

After installation, your acceptance test requires five steps:

Step 1: Open the power termination kit cover and disconnect wires from the terminals.

Step 2: Connect the black test lead to the grounding braid and the red test to both bus wires.

Step 3: Perform the insulation resistance test for one minute. A passing test should be at a minimum of 20 megohms.

Step 4: Record the test values. 

Step 5: Re-connect wires into terminals and close the cover on the power termination kit. Repeat steps one through five for your final inspection test and before energizing the system.

Click on the link to find a copy of our Cable Inspection and Meg Test Form.