Journeyman Electrician’s Exam Journeyman Electrician's Load Calculations

Question 1

According to NEC Table 220.12, what is the unit lighting load for a dwelling unit?

Accepted Answer

3 VA/sq ft

Answer

NEC Table 220.12 specifies 3 VA per square foot as the unit lighting load for dwelling units.

Question 2

Per NEC 220.52(A), what is the minimum number of 20-ampere small appliance branch circuits required for a dwelling unit?

Accepted Answer

2

Answer

NEC 220.52(A) requires at least two 20-ampere small appliance branch circuits for the kitchen, pantry, dining room, and similar areas.

Question 3

Per NEC 220.52(B), what is the standard load used for the laundry branch circuit in a dwelling unit load calculation?

Accepted Answer

1,500 VA

Answer

NEC 220.52(B) assigns a 1,500 VA load for the laundry branch circuit in dwelling unit calculations.

Question 4

What demand factor does NEC Table 220.42 assign to the first 3,000 VA of general lighting load in a dwelling unit?

Accepted Answer

100%

Answer

NEC Table 220.42 requires the first 3,000 VA of dwelling lighting load to be calculated at 100% demand with no reduction allowed.

Question 5

A dwelling unit has 1,500 square feet of living space. What is the calculated general lighting load before demand factors are applied?

Accepted Answer

4,500 VA

Answer

1,500 sq ft × 3 VA/sq ft = 4,500 VA per NEC Table 220.12.

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