Podcast
Questions and Answers
Under what hazardous locations class and division is a job that contains an abnormal amount of concentrated lead paint dust?
Under what hazardous locations class and division is a job that contains an abnormal amount of concentrated lead paint dust?
- Class 1 Division 1
- Class 2 Division 1
- Class 2 Division 2 (correct)
- Class 3 Division 1
3/0AL wire is rated for:
3/0AL wire is rated for:
- 100 Amps
- 175 Amps (correct)
- 200 Amps
- 600 Amps
How many pounds can a lighting box support?
How many pounds can a lighting box support?
- 50 lbs. (correct)
- 70 lbs.
- 80 lbs.
- 100 lbs.
As per Title 24, how many outside lights are permitted before requiring the use of photosensors to operate the lights?
As per Title 24, how many outside lights are permitted before requiring the use of photosensors to operate the lights?
There are 2 workers inside of a confined space, how many workers need to be at the entrance?
There are 2 workers inside of a confined space, how many workers need to be at the entrance?
How many 12-gauge THHN wires can fit in ¾” EMT conduit?
How many 12-gauge THHN wires can fit in ¾” EMT conduit?
A 45,000-watt primary source with a 208/120-volt 3-phase system operates at what amperage?
A 45,000-watt primary source with a 208/120-volt 3-phase system operates at what amperage?
In a residential installation, what is the maximum battery voltage that can be put in series?
In a residential installation, what is the maximum battery voltage that can be put in series?
How frequently should flexible conduit be strapped?
How frequently should flexible conduit be strapped?
A manual transfer switch is most often used for:
A manual transfer switch is most often used for:
30A load PVC buried in concrete should be at a depth of:
30A load PVC buried in concrete should be at a depth of:
Submerged swimming pool lights that are bottom-mounted (facing upward) must have:
Submerged swimming pool lights that are bottom-mounted (facing upward) must have:
When installing solar on a roof, what is the consideration that should be taken?
When installing solar on a roof, what is the consideration that should be taken?
How are fluorescents in drop ceilings installed?
How are fluorescents in drop ceilings installed?
The client calls the electrician and complains that some of the lights don’t work. When the electrician arrives, he finds that the panelboard is overheated, what is the most likely cause?
The client calls the electrician and complains that some of the lights don’t work. When the electrician arrives, he finds that the panelboard is overheated, what is the most likely cause?
Which of the following applies to solar panels, metal frames, and metal mounting equipment on a roof-mounted PV system?
Which of the following applies to solar panels, metal frames, and metal mounting equipment on a roof-mounted PV system?
What is required if the voltage exceeds 600V?
What is required if the voltage exceeds 600V?
A main panel feeds a subpanel; what must be done?
A main panel feeds a subpanel; what must be done?
To pull 300 feet of wire inside of conduit, what special tool/method is required?
To pull 300 feet of wire inside of conduit, what special tool/method is required?
How can the proper size wire for a 3-phase motor be found?
How can the proper size wire for a 3-phase motor be found?
Motors and controllers for electrically operated pool covers must be:
Motors and controllers for electrically operated pool covers must be:
Conduit runs from the interior to the exterior of a house. What is the best way to protect the interior wires from moisture?
Conduit runs from the interior to the exterior of a house. What is the best way to protect the interior wires from moisture?
What is the main disadvantage of using an interlock device inside a panel?
What is the main disadvantage of using an interlock device inside a panel?
When climbing a ladder to reach your work area, what height are you required to be tied-off?
When climbing a ladder to reach your work area, what height are you required to be tied-off?
When installing batteries in a residential setting, when should there be a protective cover over a battery preventing harm from live parts?
When installing batteries in a residential setting, when should there be a protective cover over a battery preventing harm from live parts?
If a generator was installed and it wasn’t approved, what should the contractor do?
If a generator was installed and it wasn’t approved, what should the contractor do?
Which of the following terminals does not belong in a three-way switch circuit?
Which of the following terminals does not belong in a three-way switch circuit?
A contractor notices that the as-built plans are NOT up to code. Who should be contacted?
A contractor notices that the as-built plans are NOT up to code. Who should be contacted?
The current photovoltaic system has a total of 21 panels. Each rail supports 3 panels and each rail requires 3 jacks. If the customer asks you to add 15 panels to the system, what is the total number of jacks required?
The current photovoltaic system has a total of 21 panels. Each rail supports 3 panels and each rail requires 3 jacks. If the customer asks you to add 15 panels to the system, what is the total number of jacks required?
If there are 3 wires in an EV charging coupler; 1 long and 2 short, why is one of the prongs longer?
If there are 3 wires in an EV charging coupler; 1 long and 2 short, why is one of the prongs longer?
What is the minimum conductor size required for a 50-amp disconnect?
What is the minimum conductor size required for a 50-amp disconnect?
An automatic transfer switch is most often used for:
An automatic transfer switch is most often used for:
Who gives the permit to enter a manhole (confined area)?
Who gives the permit to enter a manhole (confined area)?
After asbestos work is done, where should worker clothes be bagged for disposal?
After asbestos work is done, where should worker clothes be bagged for disposal?
What is the maximum length of a cord for a standalone spa or hot tub?
What is the maximum length of a cord for a standalone spa or hot tub?
What is the minimum branch circuit rating for a household range or cooking appliances?
What is the minimum branch circuit rating for a household range or cooking appliances?
A 90-year-old home has masonry walls which must be adapted to make a hole for conduit penetration. What tool is best suited for the task?
A 90-year-old home has masonry walls which must be adapted to make a hole for conduit penetration. What tool is best suited for the task?
How many single pole breakers can we put in a 200 amp subpanel?
How many single pole breakers can we put in a 200 amp subpanel?
How should a nick in the insulation of a Romex cable be addressed?
How should a nick in the insulation of a Romex cable be addressed?
After a residential solar system was installed, the customer complains that phone messages are recorded with disturbances. What is the likely cause?
After a residential solar system was installed, the customer complains that phone messages are recorded with disturbances. What is the likely cause?
What is the allowable setback gap of a newly installed flush-mounted outlet box?
What is the allowable setback gap of a newly installed flush-mounted outlet box?
The client asks for a stove to be 6” away from the countertop, which of the following applies?
The client asks for a stove to be 6” away from the countertop, which of the following applies?
You brought a 4-kW generator and plugged it into the receiving outlet of a house. What do you do to ground it?
You brought a 4-kW generator and plugged it into the receiving outlet of a house. What do you do to ground it?
How do you correct voltage from leading current?
How do you correct voltage from leading current?
What type of light may not be installed inside a closet?
What type of light may not be installed inside a closet?
In California, how should the contractor perform unit load calculations?
In California, how should the contractor perform unit load calculations?
What is the maximum length of cord or cable length for an electric vehicle charging system?
What is the maximum length of cord or cable length for an electric vehicle charging system?
How should incandescent lights be installed?
How should incandescent lights be installed?
An electrician installs two 3-way switches and one 4-way switch, how many locations can he control a light fixture from?
An electrician installs two 3-way switches and one 4-way switch, how many locations can he control a light fixture from?
If an employee is electrocuted, what is the first thing you should do?
If an employee is electrocuted, what is the first thing you should do?
What type of fluorescent lights are used in a commercial freezer?
What type of fluorescent lights are used in a commercial freezer?
How many watts are in a 120V circuit with 60-ohm resistance?
How many watts are in a 120V circuit with 60-ohm resistance?
When working on or near energized equipment, what should be considered?
When working on or near energized equipment, what should be considered?
What should you do if no lock-out device is available when installing a sub-panel?
What should you do if no lock-out device is available when installing a sub-panel?
Where should you connect the transformer's ground?
Where should you connect the transformer's ground?
Balconies, decks, and porches that are attached to the dwelling shall have at least 1 receptacle accessible from the balcony, deck, or porch. What is the maximum height for this receptacle if installed above the walking surface of a porch, deck, or balcony?
Balconies, decks, and porches that are attached to the dwelling shall have at least 1 receptacle accessible from the balcony, deck, or porch. What is the maximum height for this receptacle if installed above the walking surface of a porch, deck, or balcony?
Upon switching and/or turning on a food disposal appliance, the light fixtures begin to flicker. What is the most likely cause?
Upon switching and/or turning on a food disposal appliance, the light fixtures begin to flicker. What is the most likely cause?
An overcurrent device should always be wired in:
An overcurrent device should always be wired in:
Allowed receptacle from the residential door?
Allowed receptacle from the residential door?
Roof flashing on a solar installation is used for which of the following?
Roof flashing on a solar installation is used for which of the following?
When transporting electrical equipment with employees in the vehicle:
When transporting electrical equipment with employees in the vehicle:
Electrician arrives at a jobsite, what sign should they put up?
Electrician arrives at a jobsite, what sign should they put up?
What is the minimum distance between clothes and a lamp within a clothes closet?
What is the minimum distance between clothes and a lamp within a clothes closet?
How do you fix a disturbance between telephone lines and power conductors?
How do you fix a disturbance between telephone lines and power conductors?
How many small appliance branch circuits shall supply the kitchen, pantry, dining room, or similar area of a dwelling unit?
How many small appliance branch circuits shall supply the kitchen, pantry, dining room, or similar area of a dwelling unit?
What is the minimum distance for a GFCI to be installed from a pool wall?
What is the minimum distance for a GFCI to be installed from a pool wall?
When PVC conduit extends from a pool light’s forming shell to the junction box, the 8 AWG bonding jumper termination shall be:
When PVC conduit extends from a pool light’s forming shell to the junction box, the 8 AWG bonding jumper termination shall be:
How would you connect a backup generator to a main panel?
How would you connect a backup generator to a main panel?
In a 3-way switch, which wire is used to control lights at two locations?
In a 3-way switch, which wire is used to control lights at two locations?
What should you do if the electrical extension cord is damaged?
What should you do if the electrical extension cord is damaged?
What are the leg colors of a 208-120 volt three-phase electrical system?
What are the leg colors of a 208-120 volt three-phase electrical system?
A homeowner calls an electrician to troubleshoot a circuit. The circuit has a total of 6 outlets, but when the homeowner plugs in a portable heater, 5 out of the 6 stop working. What is the most likely cause?
A homeowner calls an electrician to troubleshoot a circuit. The circuit has a total of 6 outlets, but when the homeowner plugs in a portable heater, 5 out of the 6 stop working. What is the most likely cause?
A subcontractor noticed on the walk-through that the main panel is undersized and was approved by the inspector. Who should be contacted to resolve the issue?
A subcontractor noticed on the walk-through that the main panel is undersized and was approved by the inspector. Who should be contacted to resolve the issue?
How would a 5/16 lag bolt be installed into a joist to support electrical equipment?
How would a 5/16 lag bolt be installed into a joist to support electrical equipment?
What is used to calculate for horsepower?
What is used to calculate for horsepower?
If working in an area above energized equipment what is required?
If working in an area above energized equipment what is required?
After a flood, what percentage of erosion must be contained prior to returning to work?
After a flood, what percentage of erosion must be contained prior to returning to work?
Who controls loud noises on the jobsite?
Who controls loud noises on the jobsite?
What are the leg colors of a 480-277 volt three-phase electrical system?
What are the leg colors of a 480-277 volt three-phase electrical system?
How does a generator transfer power?
How does a generator transfer power?
What is the maximum allowable height of a scaffold in light trade?
What is the maximum allowable height of a scaffold in light trade?
What should an electrician consider if a chandelier is replaced with a fan?
What should an electrician consider if a chandelier is replaced with a fan?
What does a megohmmeter measure?
What does a megohmmeter measure?
If installing wiring through bored holes or notches of a stud, and when steel plates are required for protection, what is the minimum thickness of the steel plate?
If installing wiring through bored holes or notches of a stud, and when steel plates are required for protection, what is the minimum thickness of the steel plate?
Which of the following regulations applies to service–entrance conductors that are supplying service to a building structure?
Which of the following regulations applies to service–entrance conductors that are supplying service to a building structure?
A warehouse has lights installed 25’ above the ground. What kind of lights would experience cycling?
A warehouse has lights installed 25’ above the ground. What kind of lights would experience cycling?
A branch circuit supplying a submersible fountain pump must:
A branch circuit supplying a submersible fountain pump must:
What size copper wire connects the grounding electrode conductor or bonding jumper to a grounding rod, pipe, or plate?
What size copper wire connects the grounding electrode conductor or bonding jumper to a grounding rod, pipe, or plate?
If a 200-ampere service rating is selected for a dwelling, what is the minimum size aluminum service conductor?
If a 200-ampere service rating is selected for a dwelling, what is the minimum size aluminum service conductor?
How many wires run from a main panel to a sub-panel?
How many wires run from a main panel to a sub-panel?
What is common during finish wiring tasks?
What is common during finish wiring tasks?
When should “Warning-High-Voltage” signs be placed?
When should “Warning-High-Voltage” signs be placed?
A continuous white or natural gray covering can only be used on which type of conductors:
A continuous white or natural gray covering can only be used on which type of conductors:
You need to install 520 photovoltaic panels. If 2 workers can install 2 panels every 6 minutes, at a salary of $25.20 per hour, what is the total labor cost?
You need to install 520 photovoltaic panels. If 2 workers can install 2 panels every 6 minutes, at a salary of $25.20 per hour, what is the total labor cost?
An older home has an outlet which is missing a ground wire. The electrician must:
An older home has an outlet which is missing a ground wire. The electrician must:
Notching a nonbearing wall stud should not exceed ____ of the stud depth.
Notching a nonbearing wall stud should not exceed ____ of the stud depth.
What environmental considerations are needed for solar installations?
What environmental considerations are needed for solar installations?
