Which component is powered by 20 amperes, 208-240 VAC?

Which component is powered by 20 amperes, 208-240 VAC?

• A. Chairlift Operation Inspection
• B. Aircraft Cable Design
• C. Drive Unit
• D. Horsepower Requirement

Answer: (C)

The drive unit is the component that uses the main line power, typically 208–240 VAC, to produce the motion of the escalator or moving walk. The 20 A rating at that voltage reflects the motor’s size and the amount of electrical power it can draw to deliver mechanical power—roughly 4.2 kW to 4.8 kW (calculated as P = V × I, so about 208 V × 20 A or 240 V × 20 A). This motor converts electrical energy into the torque needed to move the steps and belt. The other options aren’t components that are energized by that supply. Chairlift operation inspection is a procedure, not a powered part. Aircraft cable design concerns the cables’ strength and construction, not electrical supply. Horsepower requirement is a specification used for selecting or verifying the motor size, not a device that draws current. So the drive unit is the one powered by 20 amperes at 208–240 VAC.

The drive unit is the component that uses the main line power, typically 208–240 VAC, to produce the motion of the escalator or moving walk. The 20 A rating at that voltage reflects the motor’s size and the amount of electrical power it can draw to deliver mechanical power—roughly 4.2 kW to 4.8 kW (calculated as P = V × I, so about 208 V × 20 A or 240 V × 20 A). This motor converts electrical energy into the torque needed to move the steps and belt.

The other options aren’t components that are energized by that supply. Chairlift operation inspection is a procedure, not a powered part. Aircraft cable design concerns the cables’ strength and construction, not electrical supply. Horsepower requirement is a specification used for selecting or verifying the motor size, not a device that draws current. So the drive unit is the one powered by 20 amperes at 208–240 VAC.