Licensed Electrical Contractor Licensed Electrical Contractor Special Occupancies and Equipment Questions and Answers 3

Question 1

In a patient care area of a healthcare facility, what is the maximum impedance permitted for the equipment grounding path from a receptacle to the grounding bus of the panel?

Accepted Answer

0.1 ohm

Answer

0.2 ohm

Answer

0.5 ohm

Answer

1.0 ohm

Question 2

What type of seal is required where a conduit passes from a Class I, Division 2 location into an unclassified area?

Accepted Answer

A conduit seal fitting within 18 inches of the boundary

Answer

No seal is required

Answer

A seal only if the conduit is larger than 2 inches

Answer

A weatherproof fitting at the boundary

Question 3

Per NEC Article 625, what is the minimum branch circuit rating required for a Level 2 electric vehicle charging station rated at 32 amps continuous?

Accepted Answer

40 amperes

Answer

30 amperes

Answer

50 amperes

Answer

60 amperes

Question 4

Which of the following areas is classified as a Class I, Zone 0 hazardous location?

Accepted Answer

The interior of a closed process vessel containing flammable liquid under normal conditions

Answer

A ventilated spray booth during operation

Answer

A grain storage bin with combustible dust

Answer

An area adjacent to a fuel dispensing pump

Question 5

When installing a hot tub outdoors, what is the minimum distance that a 15- or 20-ampere receptacle must be located from the inside wall of the hot tub?

Accepted Answer

6 feet

Answer

5 feet

Answer

10 feet

Answer

20 feet

Question 6

In a commercial garage where flammable fuel is dispensed, up to what height above the floor is the area typically classified as a Class I, Division 2 location?

Accepted Answer

18 inches

Answer

12 inches

Answer

36 inches

Answer

48 inches