IBEW Electrical Practice Test 2026 – Complete Exam Preparation

Household circuits are primarily designed to supply electrical devices and appliances used within a home while adhering to safety standards and regulations. The National Electrical Code (NEC) typically allows for standard lighting and general-purpose receptacle circuits in residential settings to provide a maximum current rating of 15 Amperes.

This limit ensures that the circuits can handle common household loads safely without overheating or causing fire hazards. Most household outlets, especially those designed for typical electrical devices such as lamps and small appliances, are rated for this 15 Amp maximum. Additionally, these circuits are generally fused or protected with circuit breakers at this current rating.

Higher ratings, such as 20 Amperes or 30 Amperes, are used for specific applications like dedicated circuits for larger appliances, power tools, or other equipment that requires more power. However, for standard household circuits primarily used for lighting and small appliance use, 15 Amperes is the accepted maximum, making it the correct answer in this context.