Texas Journeyman Electrical Practice Exam Part 1

Question 1

Three No. 4 AWG XHHW copper conductors have a maximum ampacity rating of __________, when installed in a run of EMT, and terminating on equipment with a marked temperature rating of 110°C (230°F).

Accepted Answer

95 A

Question 2

What is the maximum amperage that the heating elements of electric water heaters for swimming pools shall be divided into?

Accepted Answer

48 amperes

Question 3

In the motor branch circuit of a 30 hp autotransformer-type controlled motor, separate fuses or an inverse time circuit breaker must be rated or set at not more than ________ percent of the motor full-load current for a general-use switch to be permitted as the disconnecting means.

Accepted Answer

150

Question 4

A 20 hp, 208-volt, three-phase, Design B motor in a woodworking shop frequently trips its time-delay (dual-element) fuse during startup. The maximum permitted fuse rating to resolve this issue is _____ amperes.

Accepted Answer

125

Question 5

What is the minimum total volt-amperes (VA) that must be included in the calculation for the required small-appliance and laundry circuit loads when determining the demand load for a one-family dwelling?

Accepted Answer

4,500 VA

Question 6

What is the minimum size requirement for a copper grounding electrode conductor connected to the concrete-encased building steel used as the grounding electrode system, if an AC service is supplied with four (4) parallel sets of size 500 kcmil aluminum conductors, and the grounding electrode conductor doesn't connect to another type of electrode that requires a larger size conductor?

Accepted Answer

3/0 AWG

Question 7

Maximum number of No. 10 AWG XHHW conductors that can be pulled into a run of 1 1/2 (41) EMT is __________.

Accepted Answer

33

Question 8

Which of the following areas in a dwelling are required to have all 120-volt, single-phase, 15- and 20-ampere branch circuits supplying outlets or devices protected by a listed arc-fault circuit interrupter (AFCI)?

Accepted Answer

All of these areas

Question 9

A maximum of _____ size 12/2 AWG with ground Type NM cables can be installed in an outlet box with a total volume of 18 cubic inches if the box contains a duplex receptacle outlet.

Accepted Answer

3

Question 10

For photovoltaic source and output circuits operating at maximum system voltages greater than what value, should the circuits be guarded or installed in Type MC cable or in a raceway?

Accepted Answer

30 volts

Texas Journeyman Electrical Practice Exam Pt 1

Your Score

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Which of the following areas in a dwelling are required to have all 120-volt, single-phase, 15- and 20-ampere branch circuits supplying outlets or devices protected by a listed arc-fault circuit interrupter (AFCI)?

Kitchens

Recreational rooms

All of these areas

Laundry areas

For photovoltaic source and output circuits operating at maximum system voltages greater than what value, should the circuits be guarded or installed in Type MC cable or in a raceway?

120 volts

48 volts

250 volts

30 volts

When there are more than three current-carrying conductors in a raceway, which table should be used to determine the ampacity adjustment factors?

Table 310.15(B)

Table 310.15(B)(1)

Table 310.15(C)(1)

Table 310.15(B)(16)

Which of the following is a situation where Liquid-tight flexible metallic conduit (LFMC) cannot be used?

in concealed work

in lengths in excess of six (6) feet

where subject to physical damage

in hazardous locations

What is the minimum height of the working space in front of a 480-volt, 3-phase, 400 ampere rated motor control center, disconnect switch, or main switchboard, as required by electrical codes, measured from the floor to the ceiling?

6 feet

6 feet, 3 inches

6 feet, 6 inches or the height of the equipment

8 feet or the height of the equipment

The consumer service location can be placed in _________.

coal bins

hazardous locations

areas above flood elevation

rooms with ambiet temperature of 40C

In the motor branch circuit of a 30 hp autotransformer-type controlled motor, separate fuses or an inverse time circuit breaker must be rated or set at not more than ________ percent of the motor full-load current for a general-use switch to be permitted as the disconnecting means.

125

150

175

200

Equipment failure in a grain elevator has caused materials to be released in quantities sufficient to produce explosive mixtures and interfere with the normal operation of the electrical equipment - the area classification of the grain elevator is __________

Category 1

Category 2

Division 1

Division 2

A luminaire is to be controlled from three different locations, __________ is required to allow the luminaire to be controlled independently from each location.

Three 3-way switches

Three 4-way switches

Two 3-way switches and one 4-way switch

Two 4-way switches and one 3-way switch

What is the term for the part of a wiring system that lies between the final overcurrent device protecting a circuit and the outlets?

Service-drop

Sub-feeder

Branch-circuit

Feeder

Score

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