What is the instrument test current used for continuity testing?

In continuity testing, the instrument test current is typically set to a specific value to ensure that the resistance of the conductor being tested is sufficient for safety and functionality. A current of 200 mA is commonly used because it provides a good balance between ensuring a reliable indication of continuity and minimizing the risk of damaging sensitive components in the circuit.

Using a current that is too low may not give an accurate reading on higher resistance paths, while a current that is too high could possibly cause damage, especially in circuits with delicate components or those that are not designed to handle significant current flows. Therefore, the selection of 200 mA for this type of testing is based on industry standards that aim to ensure safety and reliability during the inspection process.