| 摘要 |
PROBLEM TO BE SOLVED: To provide a plug socket board having no risk of touching an energized power plug connected to a plug socket. SOLUTION: A line voltage between voltage conductors L1, L2 is applied to one plug socket V1 through a ground-fault breaker BR1 and an electromagnetic contactor ER, and a line voltage between the voltage conductor L1 and a neutral conductor L3 is applied to another plug socket C2 through a ground- fault breaker BR2 and the electromagnetic contractor ER. A limit switch 13, first and second operating switches SW1, SW2, an exciting coil 15d of the electromagnetic contactor ER and the like are connected in series between the voltage conductor L1 and the neutral conductor L3. The plug sockets C1, C2 are not alive when a door 2 is open as the limit switch 13 is turned off. When the limit switch 13 is turned on with the door 2 closed, the electromagnetic contactor ER is closed by pushing the first operating switch SW1 in, to energize the plug sockets C1, C2. |
