Turning off the main breaker before removing or installing a new appliance is an important safety precaution. Here's why it is necessary:
Electrical Safety: Appliances, especially those connected directly to electrical circuits, carry electrical currents that can be hazardous if mishandled. Turning off the main breaker disconnects power to the entire electrical system in your home, ensuring there is no electricity flowing through the circuits while you work on the appliance. This significantly reduces the risk of electric shock or electrical accidents.
Avoiding Short Circuits: When connecting or disconnecting an appliance, there is a possibility of accidentally touching live wires or causing a short circuit. By turning off the main breaker, you prevent any electrical surges or sparks that could occur during the process.
Protecting the Appliance: Appliances can be sensitive to sudden changes in electricity supply. Cutting off power at the main breaker ensures that the appliance is not exposed to power fluctuations or voltage spikes that might occur during installation or removal.
Preventing Fires: If there's a fault in the electrical system or the appliance itself, disconnecting power at the main breaker can prevent electrical fires from starting while you work on the appliance.
Compliance with Electrical Codes: In many places, following electrical safety procedures is required by building and electrical codes. Turning off the main breaker is a fundamental step in adhering to these safety standards.
Always remember that working with electricity can be dangerous, and it's crucial to prioritize safety. Even if you're confident in your abilities, turning off the main breaker is a non-negotiable precautionary step before working on any electrical appliance or circuit in your home. If you are uncertain or uncomfortable with electrical work, it's best to hire a qualified electrician to handle the installation or removal of appliances.