AIT Code Requirements 3

Question 1

According to the NEC, which wire gauge is the minimum size permitted for a 20-ampere branch circuit?

Accepted Answer

12 AWG

Answer

NEC Article 210.19 requires a minimum of 12 AWG copper conductors for a 20-ampere branch circuit.

Question 2

What is the purpose of a 'variance' in the context of building codes and zoning regulations?

Accepted Answer

A legal exception allowing deviation from standard code requirements

Answer

A variance grants legal permission to deviate from specific code or zoning requirements when strict compliance would cause undue hardship.

Question 3

Which NFPA standard specifically covers sprinkler systems for fire protection in buildings?

Accepted Answer

NFPA 13

Answer

NFPA 13 is the standard for the installation of automatic sprinkler systems.

Question 4

In construction, which code classification describes a building where the primary structure must be non-combustible?

Accepted Answer

Type I construction

Answer

Type I construction requires structural elements to be non-combustible and is the most fire-resistant classification.

Question 5

Under OSHA 29 CFR 1926, what is the minimum distance that a worker must maintain from an unguarded excavation edge?

Accepted Answer

2 feet

Answer

OSHA 1926.502 requires workers to stay at least 2 feet from the edge of an unprotected excavation.

(AIT) Apprenticeship and Industry Training Practice Test