Basic Safety & Tools
This must be performed on a circuit to ensure it is de-energized before any work begins.
What is lockout/tagout (LOTO)?
This device is required in areas near water, such as bathrooms and kitchens, to protect people from electric shock.
What is a Ground Fault Circuit Interrupter (GFCI)?
This common, thin-wall metal tubing is used as a raceway for protection and routing of electrical wiring.
What is Electrical Metallic Tubing (EMT)?
This essential testing tool can measure voltage, current, and resistance in a circuit.
What is a multimeter?
This document provides the minimum requirements for safe electrical installations in the United States.
What is the National Electrical Code (NEC)?
This safety device is designed to protect workers from injury during a fall by distributing the force across the body.
What is a fall protection harness?
To control a single light fixture from two different locations, you must install two of these switches.
What are 3-way switches?
These are used to secure and attach conduit or cables to various surfaces like concrete, wood, or steel.
What are anchors and supports?
These visual representations are used on a blueprint to represent outlets, switches, and fixtures.
What are blueprint symbols?
This organization is responsible for the publication and update of the National Electrical Code.
What is the NFPA (National Fire Protection Association)?
This specific tool is used to remove the sharp internal burrs left behind after cutting conduit.
What is a conduit reamer?
This type of receptacle is often installed in laundry rooms specifically for heavy-duty appliances like clothes dryers.
What is a dryer receptacle?
This raceway system is designed to be mounted on the exterior of a wall when a concealed system is not possible.
What is a surface raceway (wiremold)?
This law is used to calculate the relationship between voltage, current, and resistance in a circuit.
What is Ohm's Law?
Because the NEC is updated regularly to reflect new technology and safety findings, it operates on this many years per cycle.
What is a three-year cycle?
This power tool is used for making clean, straight cuts through heavy-duty metal materials or large conduit.
What is a portable hand-held band saw?
This specific wiring method uses a single duplex receptacle where the top and bottom outlets are powered by different circuits.
What is a split-wired duplex receptacle?
When working in a finished space where you cannot easily open the walls, these boxes are used for installation.
What are old work boxes?
This tool allows an electrician to measure the current flowing through a wire without breaking the circuit.
What is a clamp-on ammeter?
This section of the NEC contains tables specifically used for conduit fill and conductor properties.
What is Chapter 9?
This set of requirements, found in NFPA 70E, identifies the hazards and necessary protection regarding a dangerous release of energy caused by an electric arc.
What are arc-flash hazards?
This type of interrupter is designed to detect a dangerous electrical arc and disconnect the power before a fire starts.
What is an Arc-Fault Circuit Interrupter (AFCI)?
This must be performed on all conductors before they are pulled into a raceway system to ensure they fit within the allowed capacity.
What is a conduit fill calculation?
To find the actual physical dimensions of a room based on a blueprint drawing, an electrician must use this tool.
What is a measuring tool to scale (or architect's scale)?
This is the primary purpose of the NEC, as stated in its very first article.
What is the practical safeguarding of persons and property from hazards arising from the use of electricity?