Run Main Circuit Resistance Test - Switchgear and Breaker Contact Integrity — Free

Test Record and Equipment Identification

Asset identification recorded

Record the switchgear lineup, breaker ID, serial number, feeder designation, and location.

Test date and time recorded critical (required)

Document when the resistance test was performed.

Test instrument identification recorded critical (required)

Record the micro-ohmmeter or contact resistance tester model, serial number, and calibration due date.

Safety Preconditions and Test Readiness

Equipment de-energized and verified in safe condition critical (required)

Confirm the circuit is de-energized, isolated, and verified using the site lockout-tagout procedure before testing.

Yes No N/A

Required PPE available and worn critical (required)

Verify appropriate electrical PPE was used based on the task and arc-flash risk assessment.

Yes No N/A

Test leads, probes, and connections inspected critical (required)

Confirm leads and probes are intact, clean, and suitable for low-resistance measurement.

Yes No N/A

Calibration status valid critical (required)

Confirm the test instrument calibration is current and traceable.

Yes No N/A

Visual and Mechanical Condition

Contacts and joints show no visible damage or overheating critical (required)

Inspect accessible contact points, joints, and terminations for discoloration, pitting, looseness, or heat damage.

Yes No N/A

Photo evidence (optional)

Breaker or switch mechanism operates normally critical (required)

Verify the device can be opened and closed per test procedure without abnormal binding or misalignment.

Yes No N/A

All test points accessible and clean

Confirm the measurement points are accessible, free of contamination, and suitable for repeatable readings.

Yes No N/A

Main Circuit Resistance Measurements

Phase A resistance critical (required)

Enter the measured main circuit or contact resistance for Phase A.

Phase B resistance critical (required)

Enter the measured main circuit or contact resistance for Phase B.

Phase C resistance critical (required)

Enter the measured main circuit or contact resistance for Phase C.

Measurement method and test current recorded

Record the test method used, including test current, dwell time, and any averaging or compensation method.

Results, Deficiencies, and Sign-Off

Readings are balanced and within acceptance criteria critical (required)

Confirm the measured resistance values are consistent across phases and within the applicable acceptance criteria or manufacturer limits.

Yes No N/A

Deficiencies documented

Document any high-resistance reading, loose connection, contaminated contact, or other non-conformance and the corrective action taken or required.

Inspector signature critical (required)

Inspector signs to confirm the test record is complete and accurate.

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Run: Main Circuit Resistance Test - Switchgear and Breaker Contact Integrity

Test Record and Equipment Identification

Safety Preconditions and Test Readiness

Visual and Mechanical Condition

Main Circuit Resistance Measurements

Results, Deficiencies, and Sign-Off

Get your results