Which of the following appliances installed in residential occupancies need not be connected to an equipment grounding conductor?

• A. Toaster
• B. Blender
• C. Refrigerator
• D. Clothes dryer

Answer: (A)

Some appliances are designed as double-insulated (Class II), meaning they have two layers of insulation and no exposed conductive parts that rely on grounding for safety. Because of that built-in protection, they do not require an equipment grounding conductor.

The toaster is commonly a double-insulated appliance, so it can be used without a grounding conductor.

The blender, refrigerator, and clothes dryer typically have metal enclosures or exposed conductors that could become energized, so they rely on an equipment grounding conductor to carry fault current back to the source and trip the breaker. Therefore they require grounding.