Busbars come in various types, and the classification of compact busbars is as follows. Standard compact busbars: heat-shrinkable sleeves, precision processing, assembly, reliable insulation performance, with a lifespan of up to 20 years. However, they are not flame-retardant and can be used as power distribution trunk lines for heavy-duty electrical and mechanical equipment in multi-story residential buildings.
   Fire-retardant dense busway: Copper busbars are wrapped with three layers of thin film, and the working frequency withstand voltage can reach 3750V. After the bus winding, it serves as a sheath, with fire-retardant insulating boards isolating the phase busbars, oxygen index reaching 32, and electrical and fire-retardant performance of the busway.
   Thermal Insulating Busbars: Sprayed with a high-insulation, non-flammable special epoxy resin on the busbar. The accessories are made of fire-resistant insulating materials, specifically designed and processed for busbar terminals, plug boxes, and busbar channels, featuring fire-resistant properties.

   Fire pumps, fire elevators, emergency generators, and low-voltage power distribution lines should opt for fire-resistant busbars to ensure uninterrupted power supply during firefighting operations, facilitating effective fire control.