How To Test MI Cable?

Before using the MI cable, you need to test it to ensure it has no direct shots.

Insulation Resistance Test

An insulation resistance test (RI) measures a cable’s total resistance between two points separated by electrical insulation.

This test aims to test the insulation material’s effectiveness; in other terms, it checks the quality of the insulation material.

Here’s how to conduct the insulation resistance test:

• • • Ensure your cable is clean and dry
    • Conduct insulation tests before, during, and after installing the cable
    • Record the test results in a table. You will get a sample table later in the article.
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Required apparatus; Megohmmeter (500Vdc) and a heating cable.

Procedure:

• • 1. Adjust the voltage of the megohmmeter to 0Vdc
    2. Connect the negative lead to the tails of the cable.
    3. Connect the positive lead to the copper sheath of the heating cable.
    4. Link the negative lead to the cable’s tails.
    5. Switch on the megohmmeter and adjust its voltage to 500 Vdc.
    6. Subject the voltage to the cable and give it time to settle the reading.
    7. Any good cable will give you more than 200 MΩ of insulation resistance.
    8. If you get a reading below 200 MΩ, then the cable is damaged.
    9.