Advanced Rigging - Transmission and Distribution

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$49

Duration 1 Hour

The Advanced Rigging course is designed to familiarize participants with the various types of weights and tensions associated with rigging in line work. The procedures and concepts presented assume a familiarity with basic electrical theory and transmission and distribution systems. Participants without this prior training may require additional explanation or instruction.

At the conclusion of this course, participants should be able to explain the difference between static force loads and dynamic force loads, and how to determine the weight of each type of load. Participants should also be able to explain line tension, bisect tension, and guy tension, and they should be able to determine each type of tension for a given job. In addition, participants should be able to define the term “safety factor” in terms of rigging, and they should be able to use a safety factor to plan safe rigging.

By the end of this course, you will be able to:

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Identify and describe two types of loads involved in rigging for line work.

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Describe how to determine the weight exerted by a conductor on an insulator.

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Describe how to use a bisect tension formula to determine the bisect tension exerted on a corner pole.

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Describe how to determine the approximate bisect tension exerted on a corner pole by finding the approximate angle of the line at the pole and using a “rule-of-thumb” chart.

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Describe how conductor weight is affected when a conductor is raised or lifted to a new pole.

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Describe how to determine the weight and bisect tension exerted by conductors when they are moved to a new pole.

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Describe how to determine the guy tension needed to offset the bisect tension exerted by conductors after they are moved to a new corner pole.

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Explain how to establish a safety factor of 5 for the rigging used to lift a conductor and move it to a new pole.

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