Split Bus Panels were installed between the 1950’s and the 1970’s. Split Bus Panels were designed without a main breaker like modern panels today have. They instead have 2-pole breakers installed at the top of upper bus section and those breakers are labeled as the service disconnects. The lower bus bar section is fed from a 2-pole circuit breaker in the upper bus bar section which requires you to switch off all circuit breakers in the upper bus bar section to be sure power is disconnected to the lower bus bar section. The NEC (National Electric Code) requires these panels consist of no more than six (6) throws to disconnect the home’s entire electrical system.
Over time as more appliances and devices were installed and used in homes the required circuitry began to exceed the expansion capabilities of the split bus panels. This issue causes overloading which leads to excessive heating of the panels internal components which increases the risk of fire.
Today, Split Bus Panels would not meet UL (Underwriters Laboratories) safety requirements for this and several other reason these panels are recommended to be replaced with a more modern electrical panel.
If your home or soon to be home has a Split Bus Panel, and you have questions regarding how to address the issue, please do not hesitate to give us a call today and one of our professional electricians can discuss your concerns with you and/or schedule an appointment for an electrical evaluation. Have peace of mind knowing your home’s electrical system is safe.
For more information on Split Bus Panels, click on the link below or call us today and speak with one of our professional electricians for help with your split bus panel concerns.
We look forward to providing you with excellent service!
Streamline Electric Team