COURSE DESCRIPTION

This course describes splicing three phase primary cables and secondary cables. It also includes splicing in a length of cable and how to install a secondary splice.

COURSE GOALS

• Describe “phase matching” three single conductor cables.
• Describe how to splice in a length of primary cable.
• Describe how a metallic mesh wire replaces a concentric neutral on a primary cable.
• Demonstrate how to splice secondary cable.

SUBJECTS AND OBJECTIVES

Three-Phase Single Core Primary

• Explain the “phase match” for three single conductors, jacketed primary cable splices.
• Explain why “training” cables for a splice is important.

Splicing in a Length of Cable

• Describe how primary cable may need to be cut to remove a damaged section of faulted cable.
• Describe how to install a heat-shrink splice on a primary cable with a jacketed concentric wire layer.

Three-Phase Three-Core Primary

Secondary Cable Splicing

• Explain three phase primary cable within a single cable jacket and how to identify each phase.
• Explain how to install a metallic mesh wire as a concentric neutral on a primary cable.
  • Identify differences between primary and secondary cable construction.
  • Demonstrate how to perform a cold-shrink splice, or a molded mechanical splice, and explain how a heat-shrink splice is done on a secondary cable.