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Earthing Resistance Testing
RPT-2026-005 - performed 20 Jun 2026 by Tahir Mahmood
Health score
73
Measurements taken
6
1 outside reference
Findings
1
Customer visibility
Internal only
Measurements
Each reading against the reference it is judged by.
| Measurement | Reading | Reference | Result |
|---|---|---|---|
| Open circuit voltage (string A) | 612 V | Within 5% of design | Pass |
| Short circuit current (string A) | 8.5 A | Within 8% of nameplate | Pass |
| Earth electrode resistance | 6 ohm | Below 5 ohm | Pass |
| Insulation resistance (DC+ to earth) | 66 Mohm | Above 1 Mohm | Pass |
| Max module temperature | 44 C | Below 25 C above ambient | Pass |
| Performance ratio on test day | 63% | Baseline 79% | Outside reference |
Context
- Site
- Kamran Yousaf
- Customer
- Kamran Yousaf
- Capacity
- 10.0 kW
- Work order
- JOB-2026-0064
- Technician
- Tahir Mahmood
Recommendation
Bring cleaning forward by one cycle and re-torque the affected strings within 30 days.
Score 73 / 100Findings
Defects recorded during this inspection.
Earthing resistance above limit
MajorResolvedMeasured 9.4 ohm against a 5 ohm reference. Earth pit needs re-treatment.