A manual changeover switch is an electrical device that allows you to manually switch between two power sources, such as utility (mains) power and a backup generator. It's an essential component in settings where uninterrupted power is crucial, and it’s often used in residential, commercial, or industrial applications.
How a Manual Changeover Switch Works:
1. Two Power Sources: Typically, you have two sources of power:
o Primary Power (Utility Power): This is your main power source, like the electricity from your utility company.
o Backup Power (Generator): This serves as the secondary power source during outages or when the main supply fails.
2. Switch Mechanism: The manual changeover switch has three main positions:
o Position 1 (Utility Power): When the switch is in this position, the electrical load (your home, office, or equipment) is connected to the primary utility power.
o Position 2 (OFF): In this middle position, the load is disconnected from both power sources, ensuring that no power is being supplied to the load.
o Position 3 (Generator Power): When you turn the switch to this position, the electrical load is connected to the backup generator.
Негізгі бет ABB OT40F4C Manual Change Over Switch Wiring Step-by-Step Guide
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