| 摘要 |
PROBLEM TO BE SOLVED: To surely prevent devices, such as a grounding device, a measuring instrument, etc., which are attached to electrical wirings for work and construc tion, from being left undetached. SOLUTION: A unit main part 1 has socket terminals 2 of a connector 10 and the interlock signal terminal 3 of a breaker. Clamps 12 for holding wire-type objects and a lamp 14 are connected to the connector 10. If the connector 10 is attached to the unit main part 1 and the clamps 12 hold the wire-type objects, the lamp 14 is made to, for instance, flicker. Therefore, the user of the unit for preventing devices from being left undetached can detect that the wire-like objects are connected to other devices, so that the devices will not be left forgotten to be undetached.
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