C -10 TROUBLESHOOTING AND MAINTENANCE

What type of receptacle problem exists if the electrician installs the green wire instead of the black wire and vice-versa?

Which tool tests connections on Cat5, Cat6, phone lines, and television signal cables?

The ESS shuts down and the electrician inspects the system using a thermal camera. The EMTs are showing extremely high temperatures. What is the most likely cause?

After a new Air Conditioning system is installed, how should the electrical contractor test the circuit?

What is the voltage loss that occurs through all or part of a circuit due to impedance?

What should be done if two wires are entering a single pole breaker?

What should you do if a solar battery storage system is no longer efficient?

Which of the following tests should be performed if the A/C is not powering on?

What does Kelvin mean in lightbulbs?

Without cutting into insulation, what is the best tool to let you know a circuit is live?

Which two electrical loads are similar and have waveforms that are out of phase with each other?

What is used to turn on and turn off a circuit manually?

Which of the following could be a cause for hotter-than-normal incandescent light bulbs?

If the voltage lags the current in the power circuit, what can be used to fix it?

If the voltage is leading current in the power circuit, what can be used to fix it?

Which tool measures voltage?

How do you reverse a 10-horsepower 3-phase motor? Note: the electric motor is activated by a 3-phase supply; phase A, B, and C.

Which of the following cables should be removed if not in use?

Which of the following is considered to have a resistive load?

In what order do you turn on (energize) the panel for the first time?

A circuit breaker stays in the “tripped” position, what do you have to do?

Which tool measures current in a circuit?

What is the most common cause for light bulbs burning out at a high rate?

A restaurant is having its panel upgraded from 100-Amps to 480-Amps, however, the plans submitted by the contractor have errors, who should be contacted first?

In which electrical load will you find current lagging behind the voltage?

If the electrical panel is not grounded, what should you do?

What tester do you use for AFCI outlets?

What test should be performed after installing a range outlet?

Incandescent lights have been known to flicker because:

A ___________ is any circuit that controls another circuit through a relay.

If the service panel develops rust inside of the main panel, what should the Electrician do?

If you are working on an older home that has a 2-wire system and there is no ground in the outlet box, what kind of outlet should be installed?

A(n) _________ will protect solar batteries from overcharging by the array.

A solar battery’s electrolyte solution will have a specific gravity value, for example, an Edison cell has a normal specific gravity of approximately 1.200 at 60 degrees Fahrenheit. What happens when the specific gravity level falls below the designated low-limit amount?

Loose hanging wires should be:

When testing an Energy Storage System (ESS), the battery voltage and amperage show a good reading, however, the inverter output is lower than required, what could be the problem?

If the clothes dryer is not blowing hot air and you have tested the circuit for 240 volts, what could be the problem?

Which of the following causes an “open ground” electrical problem?

Ron, a licensed electrician, is on a service call. The client tells Ron that the microwave and washing machine are not working but when the client unplugged both appliances and tried another electrical device it worked without any problems. What kind of test should Ron perform on the electrical system?

What would you use to measure the amount of current a circuit is pulling without having to penetrate the sheath of the wire?

Which tool tells the user a light switch is malfunctioning?

Your receptacle tester reads “open neutral,” what is the most common location of the problem?

How do you protect a solar battery’s cell top from moisture?

What must be done if Romex cable is attached to the edge of a joist using cable staples?

Which tool measures active power?

Which tool measures resistance?

As the electrical subcontractor, you are called to the job site because there is a problem with the power tools tripping the temporary power station. What is your first step?

Which tool measures voltage, current, and resistance?

When lead-acid batteries are charged and discharged, the electrolyte concentration increases and decreases to a fixed maximum value. What is the concentration expressed as?

Which tool measures receptacle problems?

Which tool tells the electrician the exact circuit that needs to be disconnected?

Which of the following is LEAST likely to be spliced together in an outlet box?

Solar battery vent caps are accessed:

Who has the authority to turn on power to a residence or building?

Which of the following electrical problems will run electronic equipment even though an electrical problem exists?

It is common for residential homes built prior to the year 2000 to use ____ plugs for electric dryers and homes built after the year 2000 commonly use ____ plugs.

Which of the following will have the shortest life expectancy?

A couple has purchased a new home. Upon initial inspection all electric circuits worked without a problem, however, when the couple tried to turn on a table lamp using a switch, nothing happened. What could be the problem?

If your client requests to upgrade the panel from 100-amps to 200-amps, what should be your first step?

If Adam is called out on a service call because the homeowner’s outlets are all dead, what should Adam’s first step be when he tests the circuit?

What is the proper way to disconnect inoperable wires in the master bedroom outlet?

A new employee pulls wire from the breaker to its destination, however, you discover that a conductor is undersized for the rated breaker, what should be done?

If your circuit does not have a complete path for current flow, what tool will be used for testing continuity?

Who should be contacted if the drywall contractor severs a Romex cable?

How do you protect solar battery terminals?

When renewing the solution for a nickel-iron-alkaline battery, you must first discharge the battery at a normal rate to zero, and then short-circuit for 2 hours or more. Why?

What are the pre-check items to perform on a distribution panel before start-up?