To provide a laying inspection device with an automatic discriminating function that can immediately detect and report a disconnection when the disconnection is made by a protection device during a check on an electric leak due to wrong wiring in new construction, extension construction or the like.
A laying inspection device 1 sets an electric leak check current (i) to be supplied to a distribution line connected to a protection device for an ELCB, a GFCI or the like, to be inspected with an electric leak check start/current changeover switch 20, and is connected to an outlet through an insulation circuit 15 and a zero-cross discharge circuit 16. For the connection, the electric leak check current (i) is supplied to the outlet for a period of approximately 100 mS. If the protection device operates within the period because of wrong wiring of the distribution line, a microcomputer 10 reports the state by driving the electric leak check start/current changeover switch 20 and a buzzer 28.
NEO SHIGERU
MATSUKAWA KATSUMI
Seiichi Saito