PC Load Calculations and Service Entrance

Question 1

Which NEC article covers service conductors and equipment for electrical services?

Accepted Answer

Article 230

Answer

Article 220

Answer

Article 225

Answer

Article 240

Question 2

Per NEC Table 220.12, what is the general lighting load volt-ampere value per square foot for commercial office buildings?

Accepted Answer

3.5 VA per sq ft

Answer

1 VA per sq ft

Answer

2 VA per sq ft

Answer

5 VA per sq ft

Question 3

What is the minimum number of 20-ampere small appliance branch circuits required in a residential kitchen per NEC 210.11(C)(1)?

Accepted Answer

Two 20A circuits

Answer

One 20A circuit

Answer

Three 20A circuits

Answer

Four 20A circuits

Question 4

Per NEC Table 220.42, what demand factor applies to the first 3,000 VA of residential lighting load?

Accepted Answer

100%

Answer

50%

Answer

75%

Answer

125%

Question 5

What is the minimum ampere rating for service entrance equipment in a new single-family dwelling per NEC 230.79(C)?

Accepted Answer

100 amperes

Answer

60 amperes

Answer

150 amperes

Answer

200 amperes

Question 6

When sizing a feeder supplying multiple motors, how is the largest motor's FLA factored into the load calculation per NEC 430.24?

Accepted Answer

Added at 125% of its FLA

Answer

Added at 100% of its FLA

Answer

Added at 115% of its FLA

Answer

Added at 150% of its FLA