Correct Answers
1. What is the minimum working clearance depth required in front of an
electrical panel rated under 600V?
A) 24 inches
B) 30 inches
C) 36 inches
D) 48 inches
Correct Answer: C) 36 inches (NEC 110.26(A)(1))
2. Voltage drop in a conductor is primarily a function of which three factors?
A) Temperature, humidity, and altitude
B) Wire gauge, length of wire, and current flow
C) Voltage rating, insulation type, and ambient temperature
D) Frequency, power factor, and conductor material
Correct Answer: B) Wire gauge, length of wire, and current flow
3. A 12-volt DC, 13-watt fluorescent light operates 12 hours daily. How many
watt-hours are consumed per day?
A) 120 Wh
B) 156 Wh