FREE E2 Commercial Service Load Calculations Questions and Answers

Question 1

What is the calculated general lighting load, after demand factors, for a 60,000 sq. ft. commercial office building?

Accepted Answer

111,250 VA

Answer

210,000 VA

Answer

105,000 VA

Answer

98,750 VA

Question 2

A commercial building has 150 general-purpose duplex receptacles that are not used for general illumination. What is the calculated load for these receptacles after applying demand factors?

Accepted Answer

18,500 VA

Answer

27,000 VA

Answer

13,500 VA

Answer

10,000 VA

Question 3

What is the minimum calculated load required for 75 linear feet of show-window lighting in a retail store?

Accepted Answer

15,000 VA

Answer

11,250 VA

Answer

7,500 VA

Answer

18,750 VA

Question 4

According to NEC Table 220.56, what is the demand factor for a commercial kitchen with a total of 5 pieces of permanently connected kitchen equipment?

Accepted Answer

70%

Answer

80%

Answer

65%

Answer

90%

Question 5

For a 480Y/277-volt, 3-phase, 4-wire service with a calculated load of 500 amperes on the ungrounded conductors, what is the calculated neutral load?

Accepted Answer

410 A

Answer

500 A

Answer

350 A

Answer

200 A

Question 6

What is the calculated load for a 50-foot-long multioutlet assembly in a commercial workshop where simultaneous use of cord-connected appliances is likely?

Accepted Answer

9,000 VA

Answer

1,800 VA

Answer

5,000 VA

Answer

10,000 VA