| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a feed-in box having a heat treatment function arranged such that the box is not filled with heat and the temperature in the box is not elevated when power is branched from a bus duct, and capable of preventing electric shock during construction. <P>SOLUTION: A feed-in box includes a base member of U-shaped cross-section having a base section with an opening corresponding to the plug-in hole of a bus duct housing and a pair of opposite sidewall surfaces formed integrally with the base section, a lid member of U-shaped cross-section having an upper surface portion with at least one external vent hole and a pair of side surface portions and a pair of end face portions formed integrally with the upper surface portion and arranged to face each other at a predetermined interval from the sidewall surface of the base member, and a shielding plate material of U-shaped cross-section having a horizontal surface portion arranged on the inside of the lid member to form a space between itself and the lid member and provided with at least one internal vent hole and a pair of vertical surface portions facing the side surface portions of the lid member. <P>COPYRIGHT: (C)2010,JPO&INPIT |
