Portable device for testing electrical appliances

Claim 1

A portable testing device for testing the safety of an electrical appliance comprising a housing containing in combination an electrical circuit, a battery, a three pin socket including a ground, one terminal of the battery being connected to the ground pin, first indicator means in the form of a light, second indicator means in the form of a white light, and a third light, each of the lights being connected to the other terminal of the battery, a probe attached to a sliding three positioned switch, the neutral and active leads of the socket being bridged and connected to the second indicator means, the sliding switch being adapted to be connected to each of the lights and being directly connected to the one terminal of the battery in the second and third positions of the switch, whereby in the third position of the switch the three lights are connected in parallel, in the second position the white light only operates, while in the first position the switch is disconnected from the one terminal of the battery but completes the circuit to the probe which is adapted to contact the appliance casing, the casing normally being grounded to connect to the ground pin, and from it to the battery and the first indicator means, and in which position any leak between the neutral and/or active leads of the appliance is indicated by the second indicator means.