| 摘要 |
PURPOSE:To reduce the size of a lower box by easily connecting a power supply voltage line and a power neutral conductor introduced into a distribution board from its top without routing them around inside the distribution board. CONSTITUTION:A master switch 5 is disposed above either one of banks of branch switches T disposed side by side. A terminal board 11 electrically connected to a neutral conductor unit 9 is disposed above the other bank of branch switches 7. The master switch 5 and the terminal board 11 are arranged side by side and opposite to each other with a clearance 12 kept between them. A power supply side terminal 13 of the master switch 5 is positioned on the side of the master switch 5 that faces the terminal board 11. An input side terminal 14 of the terminal board 11 to be connected to the power supply neutral conductor is positioned on the side of the terminal board 11 that faces the master switch 5. The power supply voltage line and a power supply neutral conductor introduced from the top of a lower box 3 are separated to both sides at the clearance 12, and are wired. |
