| 摘要 |
A united cable protection duct buried into a wall surface of an apartment house is provided to branch off electric wires to both sides by using a branch lever at a branch frame. A duct(10) includes a work space part(13) having an opening portion formed at a center of a front side, a plurality of receiving grooves(12) formed upper and lower sides of the work space part through a sidewall(11), and a plurality of combination grooves(10'). A branch frame(20) includes a receiving part(21) for receiving an electric wire and an elliptical branch lever for covering a fireproof sponge. A terminal box(30) is installed at the opening part connected with the branch frame. A connecting terminal(30') is installed at one side of the terminal box. The terminal box includes a front opening side(31), a noise prevention part(32), and a stopper(33). |
