Electrical Circuits and Supplies

Learn the correct method for selecting, inspecting, and handling extension cords and portable electric hand tools. The purpose of ground fault interrupters is also explained.

Prerequisites

Review of the lesson, Working Safely with Electricity, is recommended.

Description

This is the second lesson in the iKNOW Electrical Safety Library. This lesson explains the relationship between voltage, current and resistance. It also demonstrates the correct method for selecting, inspecting, and handling extension cords and portable electric hand tools, and the purpose of ground fault interrupters is explained.

Objectives

Describe how voltage, current, and resistance are related. Identify safety considerations when using an extension cord. Select the correct extension cord by rating. Demonstrate the correct method of inspecting and handling extension cords. Identify the proper procedure for inspecting portable electric hand tools. Define the purpose of a Ground Fault Interrupter (GFI). Describe the proper procedure for operating mobile equipment around energized