Building electrical circuit outdoor wiring device

The utility model relates to the field of building electrical technology. The utility model discloses an outdoor wiring device for a building electrical circuit. The junction box comprises a junctionbox body and a box cover, the top and the bottom of the junction box body are symmetrically and fixedly communicated with a plurality of wiring ports. A partition plate is arranged in the junction boxbody, the left side wall and the right side wall of the partition plate are fixedly connected with the inner walls of the two sides of the junction box body through connecting blocks, a plurality ofevenly-distributed round holes are formed in the side wall of the partition plate, and the junction box body is provided with a plurality of clamping mechanisms matched with the round holes. Accordingto the utility model, electric wires can be fixedly arranged according to any situation, the application range is wide, subsequent maintenance is facilitated, and the use of people is facilitated. 本实用新型涉及建筑电气技术领域，公开了一种建筑电气线路室外接