NJATC Load Calculations

Question 1

According to NEC Table 220.12, what is the general lighting load in volt-amperes per square foot for a dwelling unit?

Accepted Answer

3 VA/sq ft

Answer

1 VA/sq ft

Answer

2 VA/sq ft

Answer

4 VA/sq ft

Question 2

How many 20-ampere small appliance branch circuits are required by the NEC in the kitchen, pantry, breakfast room, and dining room of a dwelling unit?

Accepted Answer

Two

Answer

One

Answer

Three

Answer

Four

Question 3

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

Accepted Answer

100%

Answer

75%

Answer

50%

Answer

35%

Question 4

Per NEC Table 220.55 Column C, what is the permitted demand load for a single household electric range rated at 12 kW or less?

Accepted Answer

8 kW

Answer

6 kW

Answer

10 kW

Answer

12 kW

Question 5

What minimum load in volt-amperes must be included per NEC 220.52(A) for each laundry branch circuit in a dwelling unit?

Accepted Answer

1,500 VA

Answer

1,000 VA

Answer

2,000 VA

Answer

2,500 VA

Question 6

Per NEC 220.60, when can the smaller of two non-coincident loads (such as heating and cooling) be omitted from a dwelling service calculation?

Accepted Answer

When both systems will not operate simultaneously

Answer

When the heating load exceeds 5 kW

Answer

When the AC load is greater than heating

Answer

When heating exceeds AC load by more than 50%

Question 7

For a 240-volt, single-phase circuit supplying a 30-ampere load, what is the calculated apparent power?

Accepted Answer

7,200 VA

Answer

3,600 VA

Answer

4,800 VA

Answer

6,000 VA