Quiz on the Code - Chapter 6

1.  Listed flexible metal conduit or listed liquidtight flexible metal conduit that encloses the secondary circuit conductor from a transformer or power supply for use with neon tubing shall be permitted as a bonding means if the total accumulative length of the conduit in the secondary circuit does not exceed _____ feet.
(a) 100
(b) 40   
(c) 20
(d) 6

2.  When installing branch circuit supply conductors under a raised floor in an IT equipment room, which wiring method is not permitted?
(a) Electrical metallic tubing
(b) Electrical nonmetallic tubing
(c) Type MC Cable
(d) All above are acceptable wiring methods under a raised floors in an IT equipment room.

3.  Which type of load requires a listed SPD when supplied by disconnecting means for Elevators, Dumbwaiters, Escalators, Moving Walks, Platform Lifts, or Stairway Chairlifts?
(a) Emergency system load
(b) Legally required system load
(c) Critical operation power system load
(d) Any of the above

4.  What is the maximum open-circuit voltage permitted for neon tubing equipment installed in or on a dwelling occupancy?
(a) 600 volts, nominal.
(b) 1,000 volts
(c) 7,500 volts, provided it has secondary ground-fault protection.
(d) 15,000 volts, if the transformer(s) is(are) installed in a non-combustible enclosure(s).

5.  Under what condition is mechanical ventilation NOT required for Electric Vehicle Supply Equipment (EVSE) installed in an indoor site?
(a) When the EVSE is rated for 240V, 1Ø , & the charging current is less than 32 amperes.
(b) When the indoor site is an attached residential garage with at least one operable window providing natural ventilation.
(c) Where the equipment is listed for charging electric vehicles indoors without ventilation,
(d) When the EVSE is used exclusively for Level 1 charging (120V) and the total connected load does not exceed 1.5 kW.

6.  When are luminaires, lighting outlets, and ceiling-suspended (paddle) fans located between 5 ft and 10 ft horizontally from the inside walls of a permanently installed pool NOT required to be GFCI protected?
(a) When they are supplied by a circuit rated 120V, 15A only.
(b) When they are installed at least 7.5 ft above the maximum water level and are not subject to water spray.
(c) When they are rigidly attached to a new structure specifically built for the pool area and are listed for damp locations.
(d) When they are installed 12 ft or more above the maximum water level and are rigidly attached to the existing structure.

 

 

 

Answers:

1. (a) 600.7(B)(4)

2. (d) 645.(E)

3. (d) 620.51(E)

4. (b) 600.32(I)

5. (c) 625.52(A)

6. (d) 680.22(B)(4)