ICC Electrical Systems and Safety

Question 1

Which electrical code serves as the primary reference for wiring installations in Illinois?

Accepted Answer

National Electrical Code (NEC)

Answer

OSHA 1910

Answer

ICC Mechanical Code

Answer

Illinois Fire Prevention Code

Question 2

What is the required minimum clearance between overhead electrical lines and residential rooftops in Illinois?

Accepted Answer

8 feet

Answer

3 feet

Answer

10 feet

Answer

15 feet

Question 3

Which device is required in all new residential bathrooms to protect against electrical shock from ground faults?

Accepted Answer

Ground Fault Circuit Interrupter (GFCI)

Answer

Arc Fault Circuit Interrupter (AFCI)

Answer

Surge protector

Answer

Standard 15A breaker

Question 4

When working near energized electrical equipment, Illinois contractors must follow which safety standard?

Accepted Answer

OSHA 29 CFR 1910.333 (Electrical Safety)

Answer

NFPA 13

Answer

ICC A117.1

Answer

ASHRAE 90.1

Question 5

What color is the grounding conductor in a standard U.S. electrical system?

Accepted Answer

Green or bare copper

Answer

White

Answer

Black

Answer

Red

Question 6

An ICC contractor discovers aluminum wiring in an older Illinois home. The recommended action is to:

Accepted Answer

Use approved anti-oxidant compound and CO/ALR-rated devices

Answer

Leave it as-is since it is grandfathered

Answer

Cover it with electrical tape

Answer

Immediately disconnect all power permanently