To prevent shorting out a fan motor, what precaution should be taken if applying voltage?

Ensuring that the power is turned off before applying voltage is a critical precaution to prevent damage to a fan motor. When power is off, there is no risk of accidental shorts or overloads that could lead to motor failure or electrical hazards. This step is essential for safety and to protect both the technician and the equipment involved.

In situations where a fan motor is tested or connected, having the power off allows for proper connections to be made without the risk of electrical shock or damage to components. This practice protects not only the motor but also associated control circuitry that could be damaged by an incorrect voltage application. Proper safety protocols like this are fundamental in HVAC systems, where electrical components are routinely interacted with.