Can Electricians Install New CBs Without Shutting Down Switchboard? Yes, it is possible for qualified electricians to install new circuit breakers in a live switchboard using specialized equipment and techniques. This type of work requires proper training, licensing, and authorization to handle "hot work."License Requirements Electricians must possess an appropriate electrical license that allows them to perform live electrical work. Different jurisdictions may have specific licensing requirements for working on high-voltage switchboards.

Procedure The electricians will use special insulated tools and equipment to isolate the CB slots where the new CBs will be installed. They will don insulated clothing and gloves for protection. The work will be closely supervised and monitored to ensure safety.

Timeline Installing two new CBs in a live switchboard typically takes around 2-4 hours, depending on the complexity of the switchboard and any additional safety precautions required.

Alternative Solution: Temporary Generator If the owner is adamant about not shutting down the chiller, a temporary generator can be rented and connected to the chiller to provide backup power while the switchboard is being worked on. This solution can be more costly than having the power shut down, but it ensures that the chiller remains operational.

Other Considerations The hospital's emergency circuits must be carefully assessed to ensure they have sufficient capacity to support the additional load during the power outage. Clear communication with hospital staff and patients is crucial to minimize any disruption caused by the electrical work.* A thorough risk assessment and safety plan should be developed and followed to mitigate any potential hazards. Flag for review