Point-to-Point Continuity Test Procedure
- Power off the cathodic protection unit;
- Connect test leads to voltmeter on 2 volt (or lower) DC range;
- Place test leads to individual structures
- Test and record voltages observed
Make the judgement based on the following criteria
V≤ 1 mV, the structures are electrically continuous.
V≥ 10 mV, the structures are electrically isolated.
10> V>1 mV, it is inconclusive and further diagnostic testing is required.