0412
For floating structures that are installed to rise and fall in response to the water level on a natural or man-made body of water, the electrical datum plane is 30" above the point at which the floating structure touches water. What is the minimum distance of the electrical datum plane above the deck level of the structure?
12" NEC 682.5
Wall-mounted underwater luminaries must be installed so that the top of the lens is below the water level at least ______.
18" NEC 680.23(A)(5)
The maximum branch circuit rating for footlights, border lights, and proscenium sidelights when using standard lamp holders is ______, unless heavy-duty lamp holders are used.
20A NEC 520.41(A)
The main overcurrent protective device that feeds a marina must have ground-fault protection of no more than ____.
30mA NEC 555.3
Any fixed or stationary electric sign that is installed within a fountain must be at least how many feet inside the fountain, as measured from the fountain's outside edge?
5' NEC 680.57(C)(1)
Unless there is a permanent barrier installed between the receptacles and a storable pool, a receptacle cannot be located any closer to a storable pool than ____.
6' from the inside walls of the pool NEC 680.34
Heater elements on electric pool-water heaters must be subdivided into loads not exceeding 48A each and be protected by overcurrent protective devices not greater than _____.
60A NEC 680.10
In agricultural buildings that require equipotential planes, the equipotential plane must be bonded to the grounding system with a bare or insulated solid copper wire no smaller than ______.
No. 8 AWG. NEC 547.10(B)
Which of the following qualifies as an assembly occupancy?
The auditorium of a civic center. NEC 518.1 "structures designed or intended for the gathering together of 100 or more persons..."
Which of the following is true in regard to fixed stage switchboards?
They are permitted to supply both stage and non-stage equipment NEC 520.21
Which of the following is an approved wiring method allowed in a fire-rated construction?
Type MC, MI, or AC cable NEC 518.4(A)
According to the NEC, cables on agricultural buildings must be secured within how many inches of any box, cabinet, or fitting to which they are connected?
Within 8". NEC 547.5(B)
The design and construction of a switchboard installed in theaters and similar locations must be of the ______.
dead-front type NEC 480
NEC 555.19(A)(2) states that proper shore power receptacles for marinas shall be _____.
equipped with strain relief for the cable when it is plugged in
Raceways must be installed and concealed in _____.
floors, ceilings, and walls. NEC 518.4 (C)(1)
If two separate receptacles having different voltages and amperage ratings are installed in a single boat slip, the total load calculation must include the _____.
greater of the two volt-amperes demands. NEC T 555.6, Note 1
In both new and retrofit construction situations, a hydromassage or whirlpool tub must have power supplied by an _____.
individual branch circuit. NEC 680.71
Portable on stage switchboards may be supplied with power from ______.
patch panels NEC 520.50
Footlights in a stage that are designed to disappear into a storage recess when not in use must be designed so that the ____.
power supply is automatically disconnected. NEC 520.43(C)
In temporary installations, single insulated feeder and branch circuit conductors may be used to supply the power for temporary testing, emergencies, experiments, and developmental work where accessible to _____.
qualified personnel only NEC 590.4(B), Exception
A carnival ride properly powered through a disconnect switch within 6' of the operator, can also be opened from the operator's console using a _____.
shunt trip NEC 525.21(A)
When two or more wired partitions are electrically connected together, the cord must be terminated at an attachment plug-and-cord connector equipped with a _____.
strain relief device. NEC 605.5(4)
A finish rating for places of assembly is defined as _____.
the time it takes for wood supports exposed to fire to reach an average temperature rise of 250*F (121*C) or an individual temp rise of 325*F (163*C). NEC 518.4 (C)(2), Informational Note
Individual freestanding partitions or groups of them secured together can be powered using a single flexible cord, provided that there are no more than ______.
thirteen 15A, 125V receptacles. NEC 605.9(C)
