The utility model provides a wiring device, which relates to the technical field of electric appliances and comprises a conductive mechanism, a first wire, a second wire and an insulating rod. Beforea test, a tester connects the first wire and the second wire with the conductive mechanism. Then a tester supports the wiring device through an insulating rod, places the conductive mechanism at the top of the column type circuit breaker, and enables the conductive mechanism to abut against the top of the column type circuit breaker, thereby enabling the first wire, the second wire, the conductivemechanism and the top of the column type circuit breaker to be electrically connected; after the test is finished, a tester moves the conductive mechanism down from the top of the column type circuitbreaker through the insulating rod, thereby disconnecting the electric connection among the first wire, the second wire and the top of the column type circuit breaker. According to the arrangement mode, the test success rate is ensured, the test preparation time is saved, manpower and material resources are saved, and the test efficiency is improved.