C -10 FINISH WIRING AND TRIM
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Questions and Answers

What is the first step when installing rail extensions on the panelboard?

  • Unscrew all the bolts holding down the panelboard
  • Cut all the wires coming into the panelboard
  • Turn off all power supplying this equipment (correct)
  • Install the rail extension to the main lug end of the existing mounting rail

    • What does pigtailing mean when performing work on a home with older wiring?

  • Connecting a copper wire to the end of an aluminum wire (correct)
  • Connecting an aluminum wire to the end of a copper wire
  • Placing a copper wire to the grounding conductor
  • Connecting an aluminum wire to the hot wire of a receptacle

    • What is the most practical application for a floor cord cover?

  • Used on temporary cords when high foot traffic is present (correct)
  • Installed to guide fiber optic cables in office cubicles
  • Used with flexible conduit
  • Used in university engineering rooms

    • Equipment marking and labels must be able to:

    <p>Withstand the environment involved</p> Signup and view all the answers

    Which of the following is NOT part of electrical trim work?

    <p>Installing panels</p> Signup and view all the answers

    Which of the following locations does NOT allow for insulating foam sealants?

    <p>Inside of electrical boxes</p> Signup and view all the answers

    What tool is used for bending conduit?

    <p>EMT bender</p> Signup and view all the answers

    Field-applied hazard markings must be:

    <p>Permanently affixed to the equipment and cannot be hand-written</p> Signup and view all the answers

    Which of the following can be used to protect Type AC cable?

    <p>Guard strip</p> Signup and view all the answers

    Labels must be provided for which of the following?

    <p>All of the above</p> Signup and view all the answers

    All of the above

    <p>All of the above are dimmable</p> Signup and view all the answers

    Which of the following labels is best suited for the innards of a switchboard that carries high voltage to the circuits?

    <p>Warning Arc Flash and Shock Hazard Appropriate PPE Required</p> Signup and view all the answers

    What is a requirement when installing T-bar Troffer lights in an office that is 440 square feet?

    <p>Lights must have their own wire supports to hang independently from the grid structure</p> Signup and view all the answers

    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?

    <p>Orange</p> Signup and view all the answers

    Who is responsible for protecting both in-house and contracted workers from electrical shock and arc flashes?

    <p>Employer</p> Signup and view all the answers

    What does the “2” mean in USE-2 or RHW-2 wires?

    <p>Permitted to be used at a continuous 90ºC operating temperature</p> Signup and view all the answers

    Entries into panels and junction boxes need __________ to protect from water penetration.

    <p>Wire seals</p> Signup and view all the answers

    A service disconnect must have _______ printed and displayed.

    <p>The maximum fault current</p> Signup and view all the answers

    Which of the following wires can be used in both grounded and ungrounded PV arrays?

    <p>PV wire</p> Signup and view all the answers

    Who installs conduit sealant?

    <p>Contractor</p> Signup and view all the answers

    Which of the following allows for great wire management?

    <p>All of the above</p> Signup and view all the answers

    A three-way dimmer is used when:

    <p>A dimming switch is needed at multiple locations</p> Signup and view all the answers

    Per the electrical code, if a house has more than one service disconnect then you must:

    <p>Place an additional label stating the location of the additional disconnect</p> Signup and view all the answers

    When should an electrician install cable terminators or conduit sealing bushings?

    <p>All of the above</p> Signup and view all the answers

    What is the purpose of a BOS?

    <p>Integrates PV into the building’s load</p> Signup and view all the answers

    DC photovoltaic source and output circuits require which of the following labeling?

    <p>WARNING: PHOTOVOLTAIC POWER SOURCE</p> Signup and view all the answers

    An outdoor light fixture should be marked:

    <p>Suitable for wet locations</p> Signup and view all the answers

    Which of the following locations is a poor choice for the location of a subpanel?

    <p>Areas of easily combustible materials</p> Signup and view all the answers

    What is the reason that PV wire must undergo a flame test but USE-2 wire does not?

    <p>USE-2 wire is typically installed underground where flames do not appear as often</p> Signup and view all the answers

    You should not install dimmer switches for:

    <p>Ceiling fans</p> Signup and view all the answers

    After rough-in wiring and finish wiring have been completed, what does the owner need to do to power their electronics?

    <p>Contact utility company</p> Signup and view all the answers

    Which of the following situations allow for hand-written labeling?

    <p>Markings that are subject to change</p> Signup and view all the answers

    What is the final step after installing extension rails on a panelboard?

    <p>Complete lockout/tagout procedures by removing locks and warning tags</p> Signup and view all the answers

    In PV installations most of the wiring is connected via a:

    <p>Junction box</p> Signup and view all the answers

    Which of the following considerations are applicable to PV wiring?

    <p>All of the above</p> Signup and view all the answers

    Which of the following wires is suitable for PV systems over 1,000 volts?

    <p>PV wire</p> Signup and view all the answers

    Cable trays or similar raceways carrying service entrance conductors must:

    <p>Be labeled</p> Signup and view all the answers

    Surface-mounted conduit should be sealed:

    <p>At all entry and disconnecting points</p> Signup and view all the answers

    Which of the following connectors are commonly used in newer solar wiring?

    <p>MC4</p> Signup and view all the answers

    What kind of marking would you find on a “rated” enclosure?

    <p>Type 3</p> Signup and view all the answers

    What is the most common location for terminal lugs?

    <p>Batteries in PV systems</p> Signup and view all the answers

    What are the three main types of outlets?

    <p>Convenience, special-purpose, and lighting</p> Signup and view all the answers

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