Practice Test Geeks(E2) E2 Commercial Electrical Inspector Practice Test
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Commercial Service Load Calculations Flashcards

7 cards from real E2 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. What is the minimum show window lighting load per linear foot required in commercial load calculations per NEC 220.14(G)?

    Answer: 200 VA

    NEC 220.14(G) requires a minimum of 200 VA per linear foot of show window for load calculations.

  2. When a commercial building has both electric heating and air conditioning as non-coincident loads, what does NEC 220.60 permit?

    Answer: Use only the larger load and omit the smaller

    NEC 220.60 allows the smaller of two non-coincident loads to be omitted because both will not operate simultaneously.

  3. For commercial service calculations involving motor loads, what percentage of the largest motor's full-load current must be added to the total per NEC 220.50?

    Answer: 25%

    NEC 220.50 requires 25% of the largest motor's full-load current to be added to feeder and service calculations.

  4. Per NEC Table 220.56, what demand factor applies to commercial kitchen equipment when there are only 2 cooking units?

    Answer: 100%

    NEC Table 220.56 requires 100% demand factor when a commercial kitchen has only 1 or 2 units of cooking equipment.

  5. What minimum load must be calculated for each required commercial sign or outline lighting outlet per NEC 220.14(F)?

    Answer: 1,200 VA

    NEC 220.14(F) mandates a minimum 1,200 VA for each required sign or outline lighting outlet in commercial occupancies.

  6. An inspector notices a designer used 1,500 VA per circuit for receptacles in a commercial tenant space. What is the correct NEC method?

    Answer: 180 VA per individual receptacle outlet on the yoke

    In commercial (non-dwelling) spaces, receptacles are calculated at 180 VA per outlet per NEC 220.14(I), not per circuit.

  7. A commercial HVAC system has a 40-ampere, 208V, 3-phase compressor motor. How is this load properly treated in a service calculation?

    Answer: Motor load added at 100% FLC with 25% of largest motor added separately

    HVAC compressor motors are included at 100% FLC in the total, and per NEC 220.50 an additional 25% of the largest motor is added.