Licensed Electrical Contractor Electrical Contractor Electrical Codes & Standards 2

Question 1

Under the NEC, what is the maximum voltage allowed for a Class 2 circuit?

Accepted Answer

150 volts

Answer

100 volts

Answer

30 volts

Answer

60 volts

Question 2

According to NFPA 70, what is the minimum working space depth required in front of electrical equipment rated 600 volts or less with exposed live parts on one side?

Accepted Answer

3 feet

Answer

4 feet

Answer

2.5 feet

Answer

6 feet

Question 3

What NEC article specifically covers the installation requirements for swimming pool electrical equipment?

Accepted Answer

Article 680

Answer

Article 690

Answer

Article 625

Answer

Article 700

Question 4

Per the NEC, what color must the grounded conductor (neutral) insulation be for sizes 6 AWG or smaller?

Accepted Answer

White or gray

Answer

Green

Answer

Blue

Answer

Orange

Question 5

Which NFPA standard is commonly known as the National Electrical Safety Code (NESC) and covers utility installations?

Accepted Answer

NFPA 70 does not cover utilities; the NESC is IEEE C2

Answer

NFPA 70E

Answer

NFPA 79

Answer

NFPA 75

Question 6

According to the NEC, what is the minimum burial depth for rigid metal conduit (RMC) installed under a residential driveway?

Accepted Answer

6 inches

Answer

12 inches

Answer

18 inches

Answer

24 inches