Red Seal Appliance Service Technician Practice Exam

Why are extension cords discouraged for use with large kitchen appliances?

1. They can reduce energy efficiency

2. They can cause overheating and fire hazards

3. They interfere with appliance functions

4. They damage appliance components

The correct answer is: They can cause overheating and fire hazards

Extension cords are particularly discouraged for use with large kitchen appliances due to the significant safety risks they pose, primarily associated with overheating and fire hazards. Large appliances, such as refrigerators, ovens, and dishwashers, typically require a substantial amount of power to operate. When an extension cord is used to power these appliances, it may not be rated to handle the same amount of current that the appliance draws. The consequence of using an undersized extension cord can lead to excessive heat accumulation within the cord itself, which may result in melted insulation or even ignition of the materials surrounding the cord. This creates a dangerous situation where a fire could easily start. Additionally, appliances designed to have direct, permanent electrical connections usually come with specific requirements about cord characteristics, including gauge, length, and grounding, which are not met with standard extension cords. In summary, the primary reason for discouraging the use of extension cords with large kitchen appliances is the heightened risk of overheating that can lead to fire hazards, making it essential to use properly rated outlets and wiring for such devices.