Electricity level 4, section 12

For floating structures that are installed to rise and fall in response to the water level on a natural or manmade body of water, the electrical datum plane is 30 inches (76.2 cm) above the point at which the floating structure touches the water. What is the minimum distance of the electrical datum plane above the deck level of the structure?

12 inches

Wall-mounted underwater luminaires must he installed so that the top of the lens is below the water level at least

18 inches (450 mm)

The maximum branch circuit rating for footlights, border lights, and proscenium sidelights when using standard lampholders is

20A

The main overcurrent protective device that feeds a marina must have ground-fault protection of no more than

30mA

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 feet (1.5 m)

Unless there is a permanent barrier installed between the receptacle and a storable pool, receptacle cannot be located any closer to a storable pool than

6 feet (1.83 m)

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

According to the NEC, the cables on agricultural buildings must be secured within how many inches of the box, cabinet, or fitting to which the connect?

8 inches

Which of the following is an approved wiring method allowed in fire-rated construction?

Metal-clad (MC) cable

In agricbuildings the require equipontential 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

Which of the following is true with regard to fixed stage switchboards?

They are permitted to supply both stage and non-stage equipment.

NEC Section 555.19(A)(1) states that proper shore power receptacles for marinas shall be

equipped with strain relief for the cable when it plugged in

In both new and retrofit construction situations, a hydromassage or whirlpool tub must have power supplied by a(n)

individual branch circuit

If two separate receptacles having different voltages and amperage ratings are installed in a single boat slip, the total load calculation must include

only the receptacle with the higher VA demand

A carnival ride properly powered through a disconnect switch within 6 feet (1.8 m) of the operator can also be opened from the operator's console using a

shunt trip

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

Which of the following qualifies as an assembly occupancy?

the auditorium of a civic center

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 when the lights are retracted

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 125V, 15A receptacles

In temporary installations, single insulated feeder and branch circuit conductors may be used to supply power for temporary testing, emergencies, experiments, and development work where accessible

to qualified persons only