42 Questions
What is the first step when installing rail extensions on the panelboard?
Turn off all power supplying this equipment
What does pigtailing mean when performing work on a home with older wiring?
Connecting a copper wire to the end of an aluminum wire
What is the most practical application for a floor cord cover?
Used on temporary cords when high foot traffic is present
Equipment marking and labels must be able to:
Withstand the environment involved
Which of the following is NOT part of electrical trim work?
Installing panels
Which of the following locations does NOT allow for insulating foam sealants?
Inside of electrical boxes
What tool is used for bending conduit?
EMT bender
Field-applied hazard markings must be:
Permanently affixed to the equipment and cannot be hand-written
Which of the following can be used to protect Type AC cable?
Guard strip
Labels must be provided for which of the following?
All of the above
All of the above
All of the above are dimmable
Which of the following labels is best suited for the innards of a switchboard that carries high voltage to the circuits?
Warning Arc Flash and Shock Hazard Appropriate PPE Required
What is a requirement when installing T-bar Troffer lights in an office that is 440 square feet?
Lights must have their own wire supports to hang independently from the grid structure
What color marking is required for conductors or busbars that carry the higher voltage to ground and these markings are required at connection points that have a grounded conductor present?
Orange
Who is responsible for protecting both in-house and contracted workers from electrical shock and arc flashes?
Employer
What does the “2” mean in USE-2 or RHW-2 wires?
Permitted to be used at a continuous 90ºC operating temperature
Entries into panels and junction boxes need __________ to protect from water penetration.
Wire seals
A service disconnect must have _______ printed and displayed.
The maximum fault current
Which of the following wires can be used in both grounded and ungrounded PV arrays?
PV wire
Who installs conduit sealant?
Contractor
Which of the following allows for great wire management?
All of the above
A three-way dimmer is used when:
A dimming switch is needed at multiple locations
Per the electrical code, if a house has more than one service disconnect then you must:
Place an additional label stating the location of the additional disconnect
When should an electrician install cable terminators or conduit sealing bushings?
All of the above
What is the purpose of a BOS?
Integrates PV into the building’s load
DC photovoltaic source and output circuits require which of the following labeling?
WARNING: PHOTOVOLTAIC POWER SOURCE
An outdoor light fixture should be marked:
Suitable for wet locations
Which of the following locations is a poor choice for the location of a subpanel?
Areas of easily combustible materials
What is the reason that PV wire must undergo a flame test but USE-2 wire does not?
USE-2 wire is typically installed underground where flames do not appear as often
You should not install dimmer switches for:
Ceiling fans
After rough-in wiring and finish wiring have been completed, what does the owner need to do to power their electronics?
Contact utility company
Which of the following situations allow for hand-written labeling?
Markings that are subject to change
What is the final step after installing extension rails on a panelboard?
Complete lockout/tagout procedures by removing locks and warning tags
In PV installations most of the wiring is connected via a:
Junction box
Which of the following considerations are applicable to PV wiring?
All of the above
Which of the following wires is suitable for PV systems over 1,000 volts?
PV wire
Cable trays or similar raceways carrying service entrance conductors must:
Be labeled
Surface-mounted conduit should be sealed:
At all entry and disconnecting points
Which of the following connectors are commonly used in newer solar wiring?
MC4
What kind of marking would you find on a “rated” enclosure?
Type 3
What is the most common location for terminal lugs?
Batteries in PV systems
What are the three main types of outlets?
Convenience, special-purpose, and lighting
TOTAL QUESTIONS: 42 PASSING RATE: 80% PASSING SCORE: 34
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