IEC - Independent Electrical Contractors Special Occupancies and Equipment Questions and Answers

Question 1

An electrician is installing wiring for a branch circuit in a patient care space of a hospital.
According to NEC Article 517, which of the following wiring methods is required to ensure a redundant grounding path?

Accepted Answer

Metal-clad (Type MC) cable with a metallic sheath that qualifies as an equipment grounding conductor and an insulated copper equipment grounding conductor.

Answer

Type NM cable with an insulated equipment grounding conductor.

Answer

PVC conduit with an insulated copper equipment grounding conductor.

Answer

Flexible metal conduit (FMC) with an external bonding jumper.

Question 2

When installing a 125-volt, single-phase, 20-ampere receptacle near a permanently installed swimming pool, what is the minimum required horizontal distance from the inside walls of the pool?

Accepted Answer

6 feet

Answer

No minimum distance is required if it is GFCI protected.

Answer

3 feet

Answer

10 feet

Question 3

In a commercial repair garage, the area up to 18 inches above the floor is classified as a Class I, Division 2 location. Which wiring method is permitted for fixed wiring installed ABOVE this classified location?

Accepted Answer

Electrical Metallic Tubing (EMT)

Answer

Exposed Type NM (Romex) cable

Answer

PVC conduit without any special fittings

Answer

Type UF cable

Question 4

An equipotential plane is required in an agricultural building that houses livestock in a confinement area with a concrete floor. What is the minimum size solid copper bonding conductor required to connect this plane to the electrical grounding system?

Accepted Answer

8 AWG

Answer

10 AWG

Answer

6 AWG

Answer

4 AWG

Question 5

At a marina, what is the maximum ground-fault protection (GFP) setting permitted for the main overcurrent device supplying a dock where shore power is provided to boats?

Accepted Answer

100 mA

Answer

5 mA

Answer

30 mA

Answer

1000 mA

Question 6

For a carnival ride, NEC Article 525 requires a disconnecting means to be located within sight of and within what maximum distance from the operator's station?

Accepted Answer

6 feet

Answer

10 feet

Answer

25 feet

Answer

50 feet

An electrician is installing wiring for a branch circuit in a patient care space of a hospital.According to NEC Article 517, which of the following wiring methods is required to ensure a redundant grounding path?

An electrician is installing wiring for a branch circuit in a patient care space of a hospital.
According to NEC Article 517, which of the following wiring methods is required to ensure a redundant grounding path?