For battery racks, operating at 120 volts to ground, there shall be a minimum clear working space of _________ from the front edge of the battery rack and a tile wall.

Which of the following is not allowed to be used as a grounding electrode?

Lighting track shall not be installed less than ____________ above the finished floor except where protected from physical damage or where the track operates at less than 30 volts rms open-circuit voltage.

A 3-phase, 4-wire wye connected electrical system has a current draw of 132 amperes on A phase, 132 amperes on C phase, and 0 amperes on B phase. What is the approximate current in the neutral conductor?

What is the maximum setting for the overcurrent protective device used for protection of a phase converter that supplies variable loads if the nameplate input load is 23 amperes?

What is the maximum number of 8 AWG, RHW conductors allowed in a 1 in. rigid metal conduit that is over 24 in. long?

Flat conductor cable systems shall not be used in ____________.

Electrically operated in-sink waste disposers may be cord-and-plug connected with a flexible cord not less than _________ in length.

Nonmetallic raceways routed under public roads shall be buried to a depth not less than __________.

Where cables are located on only one side of a manhole intended for personnel entry, a clear work space of not less than ____________ shall be provided.

A building has a 4 AWG copper grounding electrode conductor connected to the underground metal water piping system. What maximum size copper ungrounded service entrance conductors would be allowed for this installation?

_____________ shall not be used on rigid metal conduit for connection at couplings.

The total marked rating of a cord- and attachment-plug-connected room air-conditioner shall not exceed ________ of the rating of a branch circuit where no other loads are supplied.

What is the total resistance of a parallel circuit containing 1 – 10 ohm resistor, 1 – 20 ohm resistor, and 1 – 30 ohm resistor? (All resistors are connected in parallel.)

For each single family dwelling unit, that is at grade level, at least one receptacle outlet readily accessible from grade and not more than ___________ above grade level shall be installed at the front and back of the dwelling.

What is the allowable ampacity of each conductor where 4 current-carrying, 6 AWG, THWN, copper conductors are installed in a raceway?

Fire alarm outlets shall not be installed closer than _________ from the inside walls of a swimming pool.

What is the allowable ampacity of a 14 AWG fixture wire?

The area within 5 ft. of the open end of a vent of an aboveground tank in a bulk storage plant shall be classified as a ______________ location.

What is the allowable ampacity of a 250 kcmil Type IGS cable?

What is the minimum calculated service load for the lighting of a 3,420 ft.² dwelling unit?

When judging electrical equipment for suitability, which of the following should be given consideration?

When 2 – 250 kcmil wires terminate per terminal and the conductors do not enter or leave the enclosure through the wall opposite its terminal, at least ___________ of wire bending space shall be provided at the terminals inside of a cabinet.

Wiring located above heated ceilings shall be considered as operating at an ambient temperature of ___________.

When nonmetallic sheathed cables are routed through bored holes in wood framing members, the holes shall be bored to that the edge of the hole is not less than ___________ from the nearest edge of the wood member.