| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an indoor wiring system simplified in wiring. <P>SOLUTION: A joint box 1 comprises electric connecting parts 11 to which three lines of single-phase power cables C are connected, and a plurality of branch connecting parts 13 which are electrically connected to the cable connecting parts 11, respectively, and to which low-voltage apparatuses SL and high-voltage apparatuses SH are alternatively connected. The low-voltage apparatuses SL are electrically connected to a one-side voltage-side power cable C1 and a neutral cable C2 out of the three lines of the single-phase power cables C, respectively, in the branch connecting parts 13, and the high-voltage apparatuses SH are electrically connected to the voltage-side power cables C1, C3 out of the three lines of the single-phase power cables C, respectively, in the branch connecting parts 13. The joint box 1 and the one-side voltage-side power cables C1, C3 are shared even in the case that the low-voltage apparatuses SL and the high-voltage apparatuses SH are mixed, and thus the wiring can be simplified. Consequently, construction, maintenance management and the extension of an apparatus are facilitated. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
