1. Copper
   Plastic
2. Steel
   Glass

The most commonly used material in electrical wiring is copper. It is used because it is low-cost, widely abundant and the fact that it's a great conductor. Other materials sometimes used include gold and aluminum.

1. Leather
   Plastic
2. Polyurethane
   Rubber

When it comes to insulating yourself and protecting yourself from shocks, rubber-soled shoes work the best. Rubber will not conduct electricity, so wearing shoes with rubber soles will not allow electricity to pass through you to the ground.

1. Rings
   Necklaces
2. Watches
   None of the above

When doing electrical work of any kind, it's a good idea to just avoid wearing any sorts of jewelry at all. While you might be safe, there is also a chance that electricity could arc and hurt you.

1. Get to the battery
   Ensure it is powered off
2. Check the wires of the device
   Clean the device

Before doing any sort of electrical work on a device or anything, you need to make sure it is powered off. If not, you could potentially shock yourself or fry the device while working on it.

1. Having lights on for more than 4 hours
   Power outages
2. Low-quality outlets
   Too many things plugged in or being used at once

Seemingly everyone has blown their breaker or had an electrical overload at one time or another. These are often caused by too many devices or other things plugged into a circuit and being used at once.

1. Call or see a doctor ASAP
   Go lay under some warm blankets
2. Do nothing
   Drink a lot of water

While you might feel fine after a larger shock, that doesn't mean that everything is fine. Some internal injuries can be very difficult to detect early, so it is better to be safe and visit the doctor to make sure you're OK.

1. 8
   2
2. 4
   12

There are two types of electrical current: alternating current (AC) and direct current (DC). AC is the power that comes from the wall, as it is always switching directions. DC comes from things like batteries, as the electricity only flows one way.

1. Once a year
   Every day before you start using it
2. Once a week
   Every few months

Extension cords can be a huge help for electricians and a wide range of other people as well. However, these should be checked frequently, at least once a day. Frayed wires or other issues can lead to these cords being real hazards.

1. That is put together correctly
   That it isn't working
2. That it is live and powered-on
   That it is already turned off

Before any electrician begins to work on or touch a device, they should assume it is live. This will already put them in a cautious state of mind, which can reduce the chance of an accidental shock.

1. To lower the amps of a particular device
   To close a circuit
2. To provide a pathway for electricity to reach the ground
   To maintain a steady electrical current

Electricity will always take the quickest pathway to the ground. Unfortunately, many times, the simplest and quickest pathway is through a person. Grounding is when you create a simpler pathway for electricity to travel, which reduces the likelihood of shocks occurring.

1. Move them from the power source.
   Turn off the power source
2. Call 911 for help.
   Tell your boss or someone else around.

While helping them up or calling 911 might seem like the right thing to do, the first thing you need to do is turn off the power source. This will not only stop them from being shocked, but also prevent others from getting shocked as well.

1. Sprinklers
   Smoke detectors
2. A ceiling light
   A window

A smoke detector is one of the best safety features a home can have. As a result, it is required that all U.S homes have one in every bedroom and at least one on every floor.

1. In the baseboards
   Behind the toilet
2. Beside the towel rack
   Within three feet of the sink

That's right, U.S rules and regulations require homes to have an outlet within three feet of the edge of the sink. This is to ensure no cords need to hang over the sink, as this could lead to shock or damage.

1. Joules
   Ghz
2. Amperes
   Watts

Amperes, or amps, is the unit that electrical current is measured in. This unit got its name from the French scientist responsible for inventing the solenoid who is a founder of electrodynamics.

1. The amount of electricity before reflexes make you let go
   How much electricity humans can let go through their body
2. The current it takes you to lose control of your body
   The current level where your muscles will contract and prevent you from letting go

The "Let Go" threshold refers to the amount of electricity that will cause your muscles to contract. As a result, you will be unable to let go of the thing that is shocking you, which can lead to more damage and shocks. This is often anywhere between 6 and 30 milliamperes.

1. Wires that are frozen
   The possibility of condensation
2. Cold hands aren't as precise.
   Circuits aren't as stable in cold weather.

Condensation can form in a cold room and this can lead to an increase in moisture within the room. While sometimes fine, this could also lead to an increase in the risk of a shock occurring.

1. Wood
   Aluminum
2. Plastic
   Fiberglass

While technically any ladder can be used by electricians, it should be ideally made of fiberglass. A wooden ladder can deteriorate, plastic ladders are low quality and aluminum ladders can conduct electricity.

1. 100 inches
   There is no minimum.
2. 30 inches
   75 inches

In order for any work to be done on an electrical panel, there should be 30 inches of clear space in the front. This will help minimize risk by preventing the space from being overcrowded with people or items.

1. Voltage
   The quality of a power outlet
2. Insulation resistance
   If a circuit is overloaded or not.

The Megger test is used to test and measure insulation resistance. It helps to verify the condition and quality of electrical insulation. It is small and portable, and can also give you simple and direct readings.

1. One
   Two
2. Three
   Four

A series circuit is a circuit in which there is only one pathway that a current can take. This is because resistors are engaged in a chain, and the current is same through each and every resistor.

1. 10,000 kWh
   100 kWh
2. 400,000 kWh
   1,000,000 kWh

While the numbers will vary from home to home, the average American residential property will use about 10,000 kWh of power each year. A common reason for higher usage includes leaving lights or TV on all day when they don't need to be on.

1. One
   Two
2. Three
   Four

In general, there are two different types of electricity. There is static electricity and dynamic (or current) electricity. Static is the buildup of charge on a surface, and dynamic is which is the flow of electricity across a conductor.

1. Dry the area with a heater.
   Do not work in a damp area.
2. Just be a little more careful.
   Utilize ground fault circuit interrupters.

If you are working in a wet or damp environment, the chance of an electric shock occurring increases by a large margin. As a result, you should use a ground fault circuit interrupter. These will stop a circuit before a shock can take place.

1. On the rise
   Declining
2. Staying the same
   Not enough data to analyze

While being an electrician is still a dangerous job, the numbers of people suffering fatal injuries in the industry are thankfully dropping. This could be to a higher emphasis on safety, better training or a wide range of other things.

1. Hydropower
   Wind turbines
2. Nuclear energy
   Fossil fuels

Fossil fuels are still responsible for the large majority of electricity in the USA. In fact, coal and natural gas alone are responsible for over 60% of electricity in the country. Next is nuclear at nearly 20%, and then renewable sources with about 17%.

1. 35-44 years old
   45+ years old
2. 25-34 years old
   Younger than 24 years old

While every age group has some risk associated with being an electrician, younger and more inexperienced workers have a higher chance of being injured on the job. For example, workers aged 18 or 19 have a 2.4 times greater chance of suffering a fatal injury than the average.

1. The AC motor
   Phonograph
2. A practical electric lightbulb
   Motion picture camera

Nikola Tesla was actually the person who invented the AC motor. However, Edison is still one of the greatest inventors of all time, as he is credited with creating the motion picture camera, the phonograph and the first practical and long-lasting light bulb.

1. A standard security procedure
   When a device is locked and won't open
2. When numerous workers are working on the same device
   When multiple devices are suffering from the same issue

Lockout/Tagout refers to a safety procedure to ensure dangerous machines are locked and shut off when being worked on. The machine should also be tagged or labeled to ensure people don't turn it back on.

1. 1850
   1897
2. 2000
   1944

The NEC (National Electrical Code) was first published back in 1897 and is published every three years. It is the standard for the safe installation of electrical wiring and equipment in the USA.

1. Class A
   Class B
2. Class C
   Class D

In the USA, there are 5 different classifications of fire. Class C refers to energized electrical equipment fires stemming from fuse boxes, circuit breakers and other machinery. In Europe, however, electrical fires are Class E.

1. They don't need to be tested.
   Every 6 months
2. Once a year
   Every month

Every 6 months, your safety gloves should be tested to ensure they can still protect you from electrical shocks. Sometimes, holes or other glove damage won't be visible to you, but could compromise the effectiveness of the gloves.

1. 1982
   1899
2. 2009
   1994

The ESFI (Electrical Safety Foundation International) is a nonprofit organization all about promoting electrical safety at home and in the workplace. It was originally founded back in 1994.

1. 54%
   75%
2. 28%
   7%

While there are many different places where electric work is done, the construction industry is where most of the fatalities unfortunately occur. 54% of all fatalities occurred within that industry.

1. 10 milliamperes
   1 million milliamperes
2. 600 milliamperes
   10,000 milliamperes

While you will normally feel pain around 30 milliamperes, our bodies are capable of handling a lot more than that. A milliampere level of 10,000 or more is often what it will take for serious injury and death.

1. White
   Black
2. Green
   Grey

The grounded conductor, also known as the neutral conductor, cannot be green. Green is the color used for a grounding conductor, which is much different from the grounded variety.