Insulation Resistance Test On a Single Phase Board | PTT

Use our guide to learn how to safely carry out an insulation resistance test on a single phase circuit, in accordance with BS7671, with our skilled trainer, Sam.

Insulation resistance is defined as the resistance to current leakage through and over the surface of the insulation material surrounding a conductor. It is measured in Ohm’s and its value represents a very important factor to electricians working within the electrical industry.

The insulation resistance test is an electrical test which uses a certain type and level of voltage to measure insulation resistance in Ohm`s. The measured resistance indicates the condition of the insulation between two conductive parts. An infinite resistance would be the perfect result, but no insulator is perfect, so the higher the reading the better. BS7671 defines the limits for Insulation Resistance tests.

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