PURPOSE: To make it easily insertionally connectible and bendable in an easy manner by notching and forming respective cable guide parts in opening edges of each power cable inserting hole of a body part and each feed distributing cable inserting hole in opposition to each cable distribution inserting part side of a cover.

CONSTITUTION: It consists of a body part 11 and a cover part 12 covering this body part 11. In the body part 11, a pair of power cable inserting holes 14, where a self-locking terminal connecting a power cable is set up inside, and a pair of distributing cable inserting holes 15, where the self-locking terminal connecting a distributing cable is set up inside both are opened in opposition to each top. And, in the cover part 12, knockout system cable wiring inserting parts 24 and 25 are formed in the side edge 21 in opposition to each position of the power cable inserting hole 14 of the body part 11 and the feed distributing cable inserting hole 15 respectively, and respective cable guide parts 26 and 27 are notched and formed in the opening edge of each power cable inserting hole 14 and each feed distributing cable inserting hole 15 in opposition to each of the these cable wiring inserting parts 24 and 25 of the cover. With this constitution, insertional connection of these power and feed distributing cables to the cable inserting hole is easy enough and, what is more, it is easily bendable toward the cable wiring insertion part.