NCCER Electrical Module 11 Questions and Answers | Latest Version | 2024/2025 | Correct & Verified

NCCER Electrical Module 11 Questions and Answers | Latest Version | 2024/2025 | Correct & Verified What is the main function of an appliance circuit? An appliance circuit supplies power to electrical appliances, ensuring they operate safely and efficiently. What are the most common types of appliances that require dedicated circuits? Common appliances that require dedicated circuits include refrigerators, ovens, dishwashers, and washing machines. Why is it important to install a dedicated circuit for certain appliances? A dedicated circuit prevents overloading by ensuring that high-power appliances have their own separate power supply. What is the role of a circuit breaker in appliance circuits? A circuit breaker protects appliance circuits from overloads and faults by interrupting the electrical flow if a problem is detected. 2 What is the difference between a 120-volt and a 240-volt appliance? 120-volt appliances are typically used for smaller devices like lamps or toasters, while 240- volt appliances, such as dryers and ovens, require higher voltage for operation. What is the purpose of a grounding wire in appliance circuits? A grounding wire provides a safe path for electricity to follow in the event of a fault, reducing the risk of electric shock or fire. How do you calculate the total amperage required for an appliance circuit? To calculate the total amperage, divide the power consumption (in watts) of the appliance by the voltage of the circuit (either 120V or 240V). Why is it important to follow the manufacturer’s specifications when installing appliances? Following the manufacturer’s specifications ensures safe operation, proper connections, and compliance with local electrical codes. What is the role of an appliance disconnect in an electrical system? An appliance disconnect is a switch used to safely isolate an appliance from the electrical supply during maintenance or servicing. 3 What type of wire is typically used for appliance circuits? Copper or aluminum conductors are commonly used for appliance circuits, depending on the required amperage and installation conditions. How do you determine the proper wire size for an appliance circuit? The wire size is determined based on the appliance's amperage, the length of the wire run, and local electrical code requirements. Why are appliances with motors usually connected to a 240-volt circuit? Appliances with motors, like air conditioners or dryers, are connected to 240-volt circuits because they require more power to run efficiently.