Free Journeyman Electrician’s General Questions and Answers

Question 1

Conductors with marks on the insulation are NOT approved for use in a wet location.

Accepted Answer

THHN

Answer

THWN

Answer

THW

Answer

THHW

Question 2

Given: A one-family dwelling unit with a demand load of 200 amperes is supplied with a 120/240 volt, single-phase electrical system from the local utility company. What are the MINIMUM size aluminium THW conductors required for use as service-entrance conductors for this residence?

Accepted Answer

4/0 AWG

Answer

2/0 AWG

Answer

1/0 AWG

Answer

3/0 AWG

Question 3

Where a 150 kVA, a single-phase transformer with a secondary voltage of 120/240, is installed at a multi-family dwelling, the secondary's full-load current rating, in amperes, is ___.

Accepted Answer

625 amperes

Answer

1250 amperes

Answer

265 amperes

Answer

526 amperes

Question 4

Which circuit breakers mentioned below do NOT have a conventional ampere rating?

Accepted Answer

75 amperes

Answer

90 amperes

Answer

225 amperes

Answer

110 amperes

Question 5

The MINIMUM length of the free conductor to be left at each junction box for splicing conductors or making connections to luminaires or devices shall be ____ .

Accepted Answer

6 inches

Answer

8 inches

Answer

4 inches

Answer

10 inches

Question 6

Conductors for overhead service drops should generally not be any smaller than.

Accepted Answer

8 AWG copper

Answer

4 AWG copper

Answer

2 AWG copper

Answer

6 AWG copper

Question 7

The NEC mandates that a galvanized eye bolt be installed at least ____ above the completed grade to serve as the connection point for electrical service.

Accepted Answer

10 ft.

Answer

15 ft.

Answer

8 ft.

Answer

12 ft.

Question 8

The wires connecting the final branch circuit overcurrent device to the service equipment, an independently derived system, or another power source

Accepted Answer

Feeder

Answer

Service conductor

Answer

Service drop

Answer

Branch circuit

Question 9

Continuous load is defined as a load when the maximum current is anticipated to last for _____ hours or more:

Accepted Answer

3

Answer

2

Answer

6

Answer

4

Question 10

Personal doors must open in the direction of egress and have the indicated panic hardware for equipment with an 800 A or higher rating that is placed less than ___ from the nearest edge of the working space:

Accepted Answer

25 ft.

Answer

12 ft.

Answer

15 ft.

Answer

6 ft.