Table of Contents
What is a type of ground fault circuit adapter?
Three types of GFCIs are commonly used in homes – the GFCI outlet, the GFI circuit breaker and the portable GFCI. All of these GFCIs perform the same function but each has different applications and limitations. 1. The GFCI outlet can also be wired to protect other outlets that are connected to it.
Which of the following is acceptable when using power tools?
Use gloves and appropriate safety footwear when using electric tools. Store electric tools in a dry place when not in use. Do not use electric tools in damp or wet locations unless they are approved for that purpose. Keep work areas well lighted when operating electric tools.
Which is a preventive measure to prevent hazards while working with power lines OSHA?
Lockout/tagout is an essential safety procedure to protect workers from injury while working on or near electrical circuits and equipment. In addition, lockout/tagout prevents contact with operating equipment parts such as blades, gears, shafts, etc.
Which is a preventive measure to prevent hazards while working?
Which is a preventive measure to prevent hazards while working with power lines? Use only nonconductive tools and materials.
What are the 3 types of GFCI?
The three most common types of GFCIs are the outlet, the circuit breaker and the portable one.
What is grounding OSHA quizlet?
Grounding. A conductive connection to the earth. Insulators. Substances with high resistance to electricity.
Where are ground-fault circuit interrupters required to be used?
GFCI protection is required for 125-volt to 250-volt receptacles supplied by single-phase branch circuits rated 150 volts or less to the ground. GFCI receptacles are required in bathrooms, garages, crawl spaces, basements, laundry rooms and areas where a water source is present.
Which of these is not a power tool safety precaution?
Which of these is not a power tool safety precaution? A. Never carry a tool by the cord or hose.
What type of soil is most likely to cause a trench cave in?
Type C soil can be cohesive, but breaks down easily when exposed to the weather. This is the most dangerous type of soil for trenching operations because it is the weakest, and requires that the most stringent protective measures.
What is OSHA grounding?
“Grounding” a tool or electrical system means intentionally creating a low-resistance path to the earth. When properly done, current from a short or from lightning follows this path, thus preventing the buildup of voltages that would otherwise result in electrical shock, injury and even death.
Which is not an insulator quizlet?
Which of the following is not an insulator? Water is not an insulator, the ions in ordinary water make it a good conductor.
What type of hazard is electricity?
The major hazards associated with electricity are electrical shock, fire and arc flash.
What are the four types of physical hazards?
Physical hazards include ergonomic hazards, radiation, heat and cold stress, vibration hazards, and noise hazards. Engineering controls are often used to mitigate physical hazards.
How does a ground fault interrupter GFCI protect against shock?
A ground fault circuit interrupter (GFCI) can help prevent electrocution. If a person’s body starts to receive a shock, the GFCI senses this and cuts off the power before he/she can get injured. GFCIs are generally installed where electrical circuits may accidentally come into contact with water.
What are the types of control measures?
When we look at control measures we often refer to the hierarchy of control measures. Eliminate the hazard. Substitute the hazard with a lesser risk. Isolate the hazard. Use engineering controls. Use administrative controls. Use personal protective equipment.
What are the different types of outlets?
7 Electrical Outlet Types & How To Use Them 15-Amp Duplex Receptacle. In the U.S., most homes have a combination of 15-amp and 20-amp, 120-volt circuits. 20A Outlets. Switched Outlets. GFCI & AFCI Outlets. Tamper-Resistant Receptacle. Specialty Outlets. USB & Smart Outlets.
What are the three types of circuit protection used today?
There are two general categories of circuit protection: 1) Fuses 2) Electro-mechanical circuit breakers. Each has its advantages which will be discussed here. Fuses break down into three convenient categories —fast-blow, slow- blow, and semiconductor. Each responds to fault current in different ways.
What is portable GFCI?
General purpose portable ground fault circuit interrupter (GFCI) bodies and cords are electrical devices used with power cords that help protect users from ground faults. Inline GFCIs are lengths of cord with an outlet plug at one end and one or more receptacles at the other end that devices plug into.
What is a ground fault quizlet?
Ground fault. Failure in a circuit that allows current to flow from a live conductor to ground. Leakage current.
What is OSHA quizlet?
OSHA. Occupational Safety and Health Administration. It was created in 1970 to protect the rights and safety of the workers. Its responsibilities are to encourage employees and employers to reduce workplace hazards, improve existing safety, and monitor job related injuries and illnesses.
What is electricity OSHA quizlet?
Electricity is the flow of energy from one place to another. Requires a source of power: usually a generating station. A flow of electrons (current) travels through a conductor. Travels in a closed circuit. Electrical Injuries (4).
What are ground faults?
A ground-fault occurs when there is a break in the low-resistance grounding path from a tool or electrical system. The electrical current may then take an alternative path to the ground through the user, resulting in serious injuries or death.
What causes a ground fault?
A ground fault occurs when electricity takes an unplanned path to ground. The current drastically increases and causes the breaker to trip. A ground fault can be caused by damaged appliances, incorrect wiring, or worn wire insulation.
