Electrical Contractor Electrical Codes & Standards Flashcards
6 cards from real Licensed Electrical Contractor practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Electrical Contractor Electrical Codes & Standards flashcards as text
Under the NEC, what is the maximum voltage allowed for a Class 2 circuit?
Answer: 150 volts
NEC Article 725 permits Class 2 circuits to operate at a maximum of 150 volts.
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?
Answer: 3 feet
NEC Section 110.26(A)(1) Condition 1 requires a minimum of 3 feet of clear working space.
What NEC article specifically covers the installation requirements for swimming pool electrical equipment?
Answer: Article 680
NEC Article 680 covers electrical installations for swimming pools, fountains, and similar installations.
Per the NEC, what color must the grounded conductor (neutral) insulation be for sizes 6 AWG or smaller?
Answer: White or gray
NEC Section 200.6 requires grounded conductors 6 AWG or smaller to have white or gray insulation.
Which NFPA standard is commonly known as the National Electrical Safety Code (NESC) and covers utility installations?
Answer: NFPA 70 does not cover utilities; the NESC is IEEE C2
The NESC is published as IEEE C2 and is separate from NFPA 70, which is the NEC for premises wiring.
According to the NEC, what is the minimum burial depth for rigid metal conduit (RMC) installed under a residential driveway?
Answer: 6 inches
NEC Table 300.5 requires a minimum cover of 6 inches for RMC under areas subject to vehicular traffic.