NEC Commercial Electrical Practice Test

What is the load computation in volt-amperes for each 2-wire small-appliance branch circuit required in a dwelling unit?

1. 1000

2. 1200

3. 1500

4. 1800

The correct answer is: 1500

The load computation for each 2-wire small-appliance branch circuit in a dwelling unit is established by the National Electrical Code (NEC). According to NEC guidelines, each small appliance branch circuit must have a minimum load calculation of 1500 volt-amperes (VA). This standard is designed to ensure that the circuit can safely handle the typical load of kitchen and dining area appliances, helping to prevent overloads and potential electrical hazards. This computation is based on typical usage patterns and the capacity of the circuits to support various kitchen devices like toasters, microwaves, and mixers. By specifying 1500 VA for each of these circuits, the NEC helps guarantee that the wiring and breakers are appropriately rated and that the electrical system can cope with simultaneous use of different appliances without tripping or causing overheating. Options indicating either 1000, 1200, or 1800 volt-amperes do not reflect the current NEC requirements for a 2-wire small-appliance branch circuit and hence would not provide the adequate load capacity necessary for safe operation in typical residential applications.