The secondary winding of the isolation transformer connected to the impedance heating elements used for fixed outdoor electric deicing and and snow-melting equipment shall not have an output voltage greater than __________ ac.

When replacing a nongrounding receptacle with a grounding –type receptacle, the equipment grounding conductor shall be permitted to be connected to ______________.

A 12 ft. long horizontal raceway is used to connect 2 panelboards. One of the panelboards is located within a Class II location and is required to be dust-ignitionproof and the other panelboard is not. How many conduit seals are required between these panelboards?

Communications wires and cables shall be separated at least _________ from other conductors of any electric light, power, or Class 1 circuits unless special conditions apply.

What minimum size THW copper feeder conductors are required to supply the following 3-phase, 208 volt motors?
1 – 15 hp
1 – 25 hp
1 – 75 hp

Information technology equipment shall be permitted to be connected to a branch circuit by a power supply cord not more than ________ in length.

Flexible metallic tubing shall not be used for system voltages over __________.

Where fuses are used for motor overload protection, a fuse shall be inserted in each ungrounded conductor and also in the grounded conductor if the supply system is _____________ with one conductor grounded.

What is the minimum calculated service load for 12 – 4,000 watt electric clothes dryers installed in an apartment complex?

What is the function of an informational note in the 2017 National Electrical Code?

Horsepower rated attachment plugs shall not be required for portable motors rated __________ or less.

Which of the following cable types is an acceptable substitute for a Type CL3P cable?

A snap switch shall not be grouped or ganged in enclosures with other snap switches, receptacles, or similar devices, unless they are arranged so that the voltage between adjacent devices does not exceed ____________, or unless barriers are installed between adjacent devices.

18 AWG fixture wire may be tapped to a 20 ampere rated branch-circuit conductor in lengths not to exceed _____________.

A grounded circuit conductor shall be permitted to ground non-current carrying metal parts of equipment, raceways, and other enclosures _____________.

All electric pool water heaters shall have the heating elements subdivided into loads not exceeding ______________.

Type MC cable shall be supported at intervals not exceeding ________.

Where a building or structure is supplied by more than one service, a permanent plaque or directory shall be installed _____________ denoting all other services supplying that building or structure and the area served by each.
I. at the front entrance to the building
II. at each service disconnect location

An incandescent lamp for general use on lighting circuits shall not be equipped with a mogul base if rated over ___________.

Outdoor mobile home disconnecting means shall be installed so that the bottom of the enclosure is not less than __________ above the finished grade or working platform.

All energized parts of fire pump equipment shall be located at least ________ above the floor level.

Individual overhead service conductors shall be _____________.
I. insulated or covered
II. copper

Which of the following statements is/are true regarding low-voltage suspended ceiling power distribution systems?
I. When connected to a multiwire branch circuit, the disconnecting means shall simultaneously disconnect only the ungrounded conductors.
II. Current-carrying conductors for load side utilization equipment shall be copper and shall be 16 AWG minimum.

A location in which combustible dust is present is classified as a ____________ location.

Which of the following wiring methods is not allowed for use in Modular Data Centers?