What is the total resistance of a parallel circuit containing 1 – 40 ohm resistor, 1 – 60 ohm resistor, and 1 – 80 ohm resistor? (All resistors are connected in parallel.)

For other than ladder jack scaffold, top plate scaffold, roof bracket scaffold, and pump jack scaffold, the minimum width of each scaffold platform and walkway shall be at least _________________.

Material stored inside buildings under construction shall not be placed with ___________ of any hoistway or inside floor opening.

The prospective symmetrical fault current at a nominal voltage at which an apparatus or system is able to be connected without sustaining damage exceeding defined acceptance criteria is known as the ________________.

The most common nominal cell voltage for a lead-acid type battery is __________ per cell.

Where a submersible pump is used in a metal well casing, the well casing shall be connected to the pump circuit ____________________.

When an instantaneous trip circuit breaker is used for the branch-circuit, short-circuit, and ground-fault protection of a motor and the setting specified by the table in the N.E.C. is not sufficient to carry the starting current of the motor, the rating of the instantaneous trip circuit breaker shall be permitted to be increased but shall not exceed __________ of the motor full-load current for Design B energy-efficient motors where the need has been demonstrated by engineering evaluation.

Expansion fittings shall be installed in auxiliary gutters where the expected length change is more than ________.

When using the zone method of classifying hazardous locations, equipment marked with a temperature class T6 would be suitable for operation with a maximum surface temperature of __________.

Additional services shall be permitted for a building where the capacity requirements are in excess of ___________ amperes at a supply voltage of 1,000 volts or less.

Receptacle outlets installed in floors of dwelling units shall not be counted as part of the required number of receptacle outlets unless located within ___________ of the wall.

Resistance-type heating elements in electric space-heating equipment shall be protected at not more than _____________.

Where a lighting system operating at the low voltage contact limit or less is used as a no-niche fixture in a permanently installed swimming pool, the wiring from the fixture may extend to a flush deck box if the box is filled with an approved potting compound and the box is located not less than ___________ from the inside wall of the pool.

What is the maximum number of 1 AWG, THWN conductors allowed in a 1 ½ in. schedule 40 PVC raceway that is over 24 in. long?

What minimum size copper equipment grounding conductor is required for a branch circuit rated 40 amperes?

A unit that is built on a single chassis mounted on wheels and has a gross trailer area not exceeding 400 ft.² in set-up mode is called a(n) _______________.

A 30 ampere tap is being made from a 200 ampere rated feeder. What minimum size THWN copper conductors are required for this tap if the tap conductors do not exceed 10 ft. in length?

Where a switchboard operates at a nominal voltage to ground of 277 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.

Splices and taps in surface metal raceways without removable covers shall be made ____________.

Communications cables shall have a temperature rating of not less than __________.

Which of the following colors is allowed for the identification of ungrounded conductors?

Electric space-heating cables installed in poured masonry floors shall have spacing not less than __________ between adjacent runs of cable.

Where a switchboard operates at a nominal voltage to ground of 277 volts, the depth of the working space in the direction of live parts shall not be less than _______________ if a concrete wall is located on the other side of the working space.

Switches and circuit breakers used as switches shall be located so that the center of the grip of the operating handle of the switch or circuit breaker, in the highest position, is not more than ___________ above the floor or working platform.

Overhead conductors for network-powered broadband communications systems shall have a of not less than __________ in any direction form the base of a swimming pool diving platform.