To provide indoor wiring high in the degree freedom of layout by equipping an indoor wiring path with a pit with its top open, which is extended in line with the position of a desk, and wiring ducts with their tops open, which are erected on the floor and are extended in the direction crossing the pit, in the position of the desk, and are drawn up along the edge of the desk.
Wirings 3a and 3c inserted into a strong electric pit 4 and a weak electric pit 5 through a supply pit 19a and a pit for trunk from a distribution board 17 and a switchboard 18 are are inserted into a wiring duct 12 after being taken out from the passage port 7 of a pit cover 6 at the section where the pits 4 and 5 and a row of desks cross each other and erected along the leg 13. The redundant part 36 of the wirings 3a-3c and 3, a branching and connection box 34, etc., are accommodated in the wiring duct 12. Especially since the pits 4 and 5 are provided, according to the position of the desk 10, and in the direction crossing this, the wiring duct 12 is extended, the necessity of providing pits at small intervals in the direction of its crossing vanishes.
MASUOKA NOBUO
ORIHARA AKIO
NIPPON PITT KK
OKADA SEISAKUSHO KK