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Grounding

ET 136

Grounding

ET 136

Course Description

Prerequisite: ET 100 with a minimum grade of "C". Develops competency in the comprehension and application of the National Electrical Code (NEC) as it applies to the effective grounding and bonding of electrical devices, equipment, and systems. Examines how to properly read and interpret the NEC tables and how to properly calculate the size of the conductors for the application. Credits may be earned in ET 136 or SKET 136, but not both. (30-0)

Outcomes and Objectives

Explain the characteristics of an effectively grounded and bonded system.

Objectives:

  • Describe the purposes of grounding and bonding.
  • Explain the intermittent problems and difficult to diagnose issues resulting from poor grounding practices.
  • Identify the types of systems that cannot be grounded.
  • Explain the requirements and methods used for grounding electrical equipment.
  • Explain residential requirements and methods for grounding receptacles and running a grounding rod.
  • Explain the requirements for grounding electrodes and grounding conductors.
  • Describe methods for effective bonding in electrical applications.
  • Explain the use, operation, and proper wiring procedure for Ground Fault Circuit Interrupters (GFCI).

Apply the knowledge of effective grounding and bonding.

Objectives:

  • Perform calculations to determine the proper sizing of grounding conductors.
  • Apply knowledge to the proper integration of surge and transient protection.
  • Explain method of correctly shielding sensitive communication cables from noise and interference.
  • Explain the hazards associated with lightning and describe methods of protection against lightning.
  • Integrate grounding symbols and wiring connections for circuit diagrams used in industrial applications.
  • Describe methods for determining an effectively grounded installation.

Apply knowledge of over-current protection to NEC and NFPA requirements.

Objectives:

  • State and comprehend safety precautions when working on electrical equipment.
  • Identify and interpret NEC tables and applicable standards for grounding and bonding requirements in industrial applications.
  • Identify and interpret NEC tables and applicable standards for grounding and bonding requirements in residential applications.
  • Develop troubleshooting techniques for identifying and correcting grounding, bonding, and surge problems.