Installation of MI Cable
Survey and carry out any necessary risk assessments using available risk checking tools/checklists and ensure the installation will be carried out in a planned and safe way. (found on page 36)
Check that the length of the cable specified on the label agrees with the length specified on the schedule or site drawings.
MICC cables are supplied with temporarily sealed ends but before installation and issuing to the installation location, the insulated cable should be tested following established procedures. We recommend insulation resistance (IR) is measured using a 500 volts insulation tester connected across the conductor(s) and the metallic sheath and conductor to conductor. It should not be less than 100 MΩ. However, site conditions may reduce this and a value of 20 MΩ is considered to be acceptable even in dry conditions. Wet conditions may reduce this even further but in any case, a value of <5 MΩ should be considered evidence of a problem to be investigated.
All measurement and test equipment should be calibrated.
All appropriate precautions should be taken when installing cables, including following OSHA and other applicable regulations. Improper installation procedures can significantly damage or impair the operation or performance of electrical cables. While different cable constructions may have varying degrees of resistance to physical damage, no technology will guarantee a damage-proof cable. Therefore, in addition to observing standard safety practices, the following safety precautions should be observed:
- Ensure that the cable reel is properly secured before cable installation.
- Pulling devices and the pull rope should be used within their rating to prevent breaking of the rope or devices under tension.
- Appropriate measures should be taken to protect personnel should breakage of the pull rope occur.
- Personnel should not stand in line with a pull rope that is under tension.
- Pull ropes should be stored clean, dry, out of direct sunlight, and away from extreme heat.
- Some synthetic rope, particularly polypropylene, polyethylene, and aramid (which are not properly treated) may be weakened by prolonged exposure to ultraviolet (UV) rays. Pull ropes should be checked before each pull for signs of aging or wear, including frayed strands and broken yarns. A heavily used rope will often become compacted or hard indicating reduced strength. If there is any question regarding the condition of the rope, it should not be used. No type of visual inspection can accurately and precisely determine residual strength.
- Most commercial cable lubricants are water-based. Any cable lubricant spilled on the floor should be cleaned up or covered immediately.
- Appropriate precautions should be taken when working around energized cables and equipment.
A link to our Installation Documentation Coming Soon…