What action should be taken if a circuit shows high insulation resistance?

When a circuit shows high insulation resistance, taking action to document the reading and perform further tests is crucial for ensuring safety and reliability. High insulation resistance typically indicates that the insulation is functioning correctly, preventing current from leaking to ground or across conductors. However, it is essential to confirm this reading with additional testing to rule out any anomalies that could affect the overall performance and safety of the circuit.

Performing further tests can include checking for other indicators of electrical integrity, such as voltage levels and continuity, which can help in diagnosing any hidden issues or confirming the insulation resistance reading. Documenting the initial reading establishes a record that can be referenced in the future, which is important for ongoing maintenance and safety assessments.

While high insulation resistance is generally favorable and might not, in itself, indicate a failure, neglecting to take any action or merely accepting the reading without further investigation could lead to undetected problems down the line. Therefore, the best practice is to document and perform additional tests to ensure that the circuit is safe and functioning as intended.