| 摘要 |
PROBLEM TO BE SOLVED: To provide a wiring box having a conduit tube connecting part by which conduit tubes of different sizes can be connected to one conduit tube connecting part, and to provide a conduit tube joint. SOLUTION: Insertion holes 15 are formed at upper and lower sidewalls 17 of the wiring box 11, and the insertion holes 15 are formed into almost oval shapes. The minor axis length L12 of each insertion hole 15 is made slightly smaller than the outside diameter D1 of a protrusion 14b of a first conduit tube 14A. The circumferential length C1 of the insertion hole 15 is made slightly longer than the external circumferential length S3 of the protrusion 14b of a third conduit tube 14C of which the outside diameter is larger than that of the first conduit tube 14A, thus enabling the first or third conduit tube 14A, 14C to be fixed to the insertion hole 15 and connected to each other. |
