ICC Residential Electrical Inspectors Practice Exam

Receptacles rated at _______________ are permitted for 20 ampere branch circuits supplying 2 or more receptacle outlets.

1. 10 amperes

2. 15 amperes

3. 20 amperes

4. 25 amperes

The correct answer is: 15 amperes

Receptacles rated at 15 amperes are indeed permitted for use on 20 ampere branch circuits that supply two or more receptacle outlets. This practice is in line with the National Electrical Code, which allows 15-ampere-rated receptacles to be installed on 20-ampere circuits, provided that the circuits are used for receptacle outlets. This rule supports the flexibility of electrical design and ensures that standard 15-ampere receptacles can safely handle the loads from devices that may be plugged into multiple outlets, while still recognizing that the overall circuit is rated for a higher load capacity. This is particularly relevant in residential settings where multiple devices may be used simultaneously. By allowing 15-ampere receptacles on a 20-ampere circuit, it ensures that homeowners can utilize existing fixtures and appliances designed for standard receptacles without overloading the circuit, promoting safety and convenience.