Iowa Electrician Exam 1

Question 1 of 25

1. Question

Electrical nonmetallic tubing shall be securely fastened at intervals not exceeding ____________.

3 ft.

4 ½ ft.

6 ft.

10 ft.

Question 2 of 25

2. Question

Which of the following statements is/are true regarding photovoltaic system disconnecting means?
I. Each PV system disconnecting means shall be suitable for use as service equipment.
II. Each PV system disconnecting means shall consist of not more than 2 switches or circuit breakers.

I only

II only

Both I and II

Neither I nor II

Question 3 of 25

3. Question

Pipe or conduit used as a grounding electrode shall not be smaller than trade size ___________.

1 ½

1

¾

½

Question 4 of 25

4. Question

In which of the following occupancy types would a panelboard, rated not over 200 amperes, be permitted in a space where the height of the working space is 6 feet?

An existing dwelling unit

A new dwelling unit

An existing retail store

All of the above

Question 5 of 25

5. Question

Isolated grounding type receptacle outlets shall be identified by a(n) ______________ on the face of the receptacle.

orange triangle

red square

green circle

blue hexagon

Question 6 of 25

6. Question

Exposed, normally non-current carrying metal parts of fixed equipment supplied by or enclosing conductors or components that are likely to become energized shall be connected to an equipment grounding conductor where within ________ vertically of ground or grounded metal objects and subject to contact by persons.

5 ft.

8 ft.

12 ft.

14 ft.

Question 7 of 25

7. Question

Which of the following statements is/are true regarding lighting track?
I. Heavy-duty lighting track is lighting track identified for use exceeding 30 amperes.
II. Each fitting attached to a heavy-duty lighting track shall have individual overcurrent protection.

I only

II only

Both I and II

Neither I nor II

Question 8 of 25

8. Question

The calculated load of a feeder or service supplying electrified truck parking spaces shall not be less than __________ per space.

11 kVA

13 kVA

15 kVA

17 kVA

Question 9 of 25

9. Question

What is the minimum calculated feeder load for the lighting of 180 motel rooms that measure 22 ft. x 18 ft. each?

213,840 VA

142,560 VA

76,152 VA

54,768 VA

Question 10 of 25

10. Question

Lampholders installed over highly combustible material shall be ____________________.

listed for use in Class II Division 1 locations

of the unswitched type

located not less than 12 ft. above the material

wired using a metal raceway or cable that is suitable as an equipment grounding conductor

Question 11 of 25

11. Question

The identification of terminals to which a grounded conductor is to be connected shall be substantially _____________ in color.

gold

white

green

black

Question 12 of 25

12. Question

How many multiconductor cables are allowed in a ladder cable tray with an interior width of 8 in. if all of the conductors are smaller than 4/0 AWG and the cross-sectional area of each cable is 0.1855 in.²?

37

43

51

56

Question 13 of 25

13. Question

The residual voltage of a capacitor, rated 1,000 volts or less, shall be reduced to 50 volts, nominal, or less within _______ after the capacitor is disconnected from the source of supply.

30 seconds

1 minute

3 minutes

5 minutes

Question 14 of 25

14. Question

4 AWG copper conductors in vertical raceways shall be supported at intervals not to exceed ____________.

50 ft.

60 ft.

80 ft.

100 ft.

Question 15 of 25

15. Question

Shielded conductors operating at over 1,000 volts shall not be bent to a radius less than ________ the overall diameter of the cable during or after installation.

6

8

10

12

Question 16 of 25

16. Question

Each patient bed location in a general care area of a health care facility shall be provided with a minimum of __________ receptacles.

4

8

12

14

Question 17 of 25

17. Question

Overhead spans for open individual conductors used for outside feeders operating at 600 volts or less shall not be smaller than _____________ for spans longer than 50 ft. unless supported by a messenger wire.

10 AWG

8 AWG

6 AWG

4 AWG

Question 18 of 25

18. Question

For emergency systems, current supply shall be such that, in the event of failure of the normal supply to, or within, the building or group of buildings concerned, emergency lighting, emergency power, or both shall be available within the time required for the application but not to exceed _____________.

3 seconds

5 seconds

10 seconds

30 seconds

Question 19 of 25

19. Question

Wood braces used to support outlet boxes must have a cross section not less than _____________.

½ in. x 2 in.

1 in. x 2 in.

2 in. x 2 in.

2 in. x 4 in.

Question 20 of 25

20. Question

When calculating service loads, the first 20 kVA of lighting load for a hotel shall be calculated at _________.

50%

80%

100%

125%

Question 21 of 25

21. Question

Not less than __________ of free nonheating lead of electric space-heating cable shall be within the junction box used for connection to the cable.

3 in.

4 in.

6 in.

8 in.

Question 22 of 25

22. Question

Which of the following statements about solidly grounded neutral systems, rated over 1,000 volts is/are true?
I. Solidly grounded neutral systems shall be permitted to be either single point grounded or multigrounded neutral.
II. The minimum insulation level for neutral conductors of solidly grounded systems shall be 1,000 volts.

I only

II only

Both I and II

Neither I nor II

Question 23 of 25

23. Question

A disconnecting means shall be provided within ___________ of each receptacle that provides shore power to boats at a marina.

50 ft.

30 ft.

6 ft.

30 in.

Question 24 of 25

24. Question

A 4 in. rigid metal conduit contains 4 – 500 kcmil, XHHW conductors. What percentage filled is this conduit?

15 – 20%

20 – 25%

25 – 30%

30 – 35%

Question 25 of 25

25. Question

Which of the following could be used to control the speed of a motor?

Rheostat

Transformer

Phase-converter

Capacitor