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

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

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

NEC 210.11(C)(1) requires at least two 20-ampere small appliance branch circuits for these areas of a dwelling.

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

NEC Table 220.42 specifies a 100% demand factor for the first 3,000 VA of general lighting and receptacle loads in a dwelling unit.

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

NEC Table 220.55 Column C permits an 8 kW demand load for a single household range rated at 12 kW or less.

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

NEC 220.52(A) requires a minimum 1,500 VA load for each laundry branch circuit included in a dwelling unit calculation.

NJATC - National Joint Apprenticeship and Training Committee Practice Test

NJATC - National Joint Apprenticeship and Training Committee Practice Test

NJATC Load Calculations