AIT Code Requirements 2

Question 1

Under the National Electrical Code (NEC), what is the maximum number of current-carrying conductors allowed in a conduit before derating is required?

Accepted Answer

3

Answer

The NEC requires derating of conductor ampacity when more than 3 current-carrying conductors are in a raceway.

Question 2

Which plumbing code is most widely adopted across the United States and serves as the basis for many state plumbing codes?

Accepted Answer

International Plumbing Code (IPC)

Answer

The International Plumbing Code (IPC), published by the ICC, is the most widely adopted plumbing code in the US.

Question 3

According to OSHA standards, what is the minimum height at which fall protection is required for general industry workers?

Accepted Answer

4 feet

Answer

OSHA requires fall protection in general industry when workers are exposed to a fall of 4 feet or more.

Question 4

In HVAC installations, which code primarily governs the mechanical systems including ductwork and equipment clearances?

Accepted Answer

International Mechanical Code (IMC)

Answer

The International Mechanical Code (IMC) governs HVAC ductwork, equipment installation, and clearance requirements.

Question 5

What does the term 'AHJ' stand for in the context of code compliance and inspections?

Accepted Answer

Authority Having Jurisdiction

Answer

AHJ stands for Authority Having Jurisdiction, referring to the organization or individual responsible for enforcing code requirements.

(AIT) Apprenticeship and Industry Training Practice Test