What is the total resistance of a circuit containing 3 – 12 ohm resistors wired in series?

Smoking and open flames shall not be permitted within _____________ of explosives and detonator storage magazines.

When attaching grounds for the protection of employees, _____________________.

A general-use switch having an ampere rating not less than twice the full-load current rating of the motor shall be permitted for use as the disconnecting means for stationary motors of _________ or less and 300 volts or less.

Main bonding jumpers must be sized in accordance with N.E.C. ______________.

Overhead service conductors routed above roofs shall have a vertical clearance of not less than ____________ above the roof surface.

What type of screw is allowed for the purpose of attaching receptacles to a box?

The conductor between the surge arrester and the line or the grounding connection shall not be smaller than __________.

All boxes and fittings used in Class III, Division 1 locations shall be ____________.

Which of the following cable types is allowed to be installed outside of a raceway in a fabricated duct used to transport environmental air?

Which of the following raceway types may be used to protect direct-buried cables emerging from grade and subject to physical damage?

What is the full-load current of a 3-phase, 230 volt, 5 hp motor?

The disconnecting means for torque motors shall have an ampere rating not less than _________ of the motor nameplate current.

Where communications cables and electric power conductors are supported by the same pole, where practicable, the communications cables shall be located ___________ the electric power conductors.

What minimum size copper equipment grounding conductor is required for a feeder rated 225 amperes?

Flexible metal conduit in trade size ⅜ is allowed to be used for the interconnection of paired luminaire sections, with a ballast supplying lamps in both fixtures, in lengths not exceeding ________.

Which of the following cable types may be used as a substitution for Type CMG cable?

Nonferrous metal faceplates for switches shall have a thickness not less than ________.

______________ shall be provided for all working spaces about service equipment, switchboards, switchgear, panelboards, or motor control centers installed indoors.

________________ driven into holes in masonry, concrete, plaster, or similar materials shall not be used when mounting electrical equipment.

A residential branch circuit rated 120 volts, provided with GFCI protection, and protected by a 20 ampere rated overcurrent protective device shall be buried to a depth not less than __________ when installed in a trench underground and covered with at least 2 in. of concrete.

Unless listed for a lower height, bare conductors used for low-voltage lighting systems shall not be installed less than __________ above the finished floor.

A 2-wire, dc system supplying premises wiring and operating at greater than 60 volts but not greater than 300 volts shall be grounded with the exception of _________________.

Which of the following would require GFCI protection?

Where electrical switchgear operates at a nominal voltage to ground of 22,000 volts, the depth of the working space in the direction of live parts shall not be less than _______________ if exposed live parts are on both sides of the working space.