# LV Cable Commissioning

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## Visual Inspection

• Check cable mechanical connections
• Check that cable colour codes conform to project specifications and/or national standards
• Verify cable tags / numbers

## Electrical Testing

• For each test, record the testing instrument make / model and serial number.
• Perform insulation-resistance test (megger) on each conductor with respect to earth and adjacent conductors. For 0.6/1kV cables, an applied voltage of 1,000 Vdc for 1 minute is appropriate, with acceptance levels of 100 M$\Omega$ for new cables and 1 M$\Omega$ for aged cables.
• Perform continuity (point-to-point) tests to ensure proper cable connection and continuity. Where applicable, perform continuity tests on each phase to neutral and each phase to phase and record the readings in Ohms.