Electric wire and cable flame retardance and fire resistance experiment device

The invention belongs to the technical field of electric wires and cables, and particularly relates to an electric wire and cable flame retardance and fire resistance experiment device which comprises an experiment box. A pair of symmetrically distributed supports is arranged on the inner wall of the bottom end of the experiment box; a U-shaped groove is formed in the top end of the support. A first cavity is formed in the support; a clamping plate is arranged on the side wall, close to the first cavity, of the U-shaped groove; a clamping block is fixedly connected to the clamping plate; the clamping block extends into the first cavity and is fixedly connected to the side wall of the first cavity through a spring. A trapezoidal through groove is formed in the clamping block; a second sliding groove is formed in the inner wall of the first cavity. The invention provides an electric wire and cable flame retardance and fire resistance experiment device, and aims to solve the problems that electric wires and cabl