Heating, Ventilation, and Air Conditioning (HVAC ) Electrical Practice Test

Relays are typically used to control inductive loads up to what amperage?

1. 10 amps

2. 15 amps

3. 20 amps

4. 25 amps

The correct answer is: 25 amps

Relays are essential components in electrical systems, specifically designed to handle the switching of electrical circuits, including inductive loads such as motors and transformers. The correct choice indicates that relays can typically manage inductive loads up to 25 amps. When dealing with inductive loads, it is crucial to account for inrush current, which can exceed the steady-state operating current. Many relays are rated for a maximum continuous current, and in practical applications, certain relays are designed to handle heavier inductive loads without failing. This is particularly relevant in HVAC applications, where motors can have significant inductive properties. Select relays are designed to manage these higher currents efficiently, ensuring that they can operate reliably without overheating or becoming damaged. Therefore, stating that relays control inductive loads up to 25 amps aligns with common industrial practices for HVAC systems and other applications that utilize stepped-up or reduced voltages within safe operational limits.