This engineering project presents, ground wire checking tool to check for the occurrence of fire suction from electrical appliances such as ATM. Coin dispenser Hot and cold water In the case of these appliances. Need to be ground in order to prevent fire, leaks by running a check on this ground is sensor input voltage to electrical appliances. If the appliance does not have a ground or faulty ground. A check will also be notified when it detects that a faulty ground, users know. Before that there will be danger to the electrical appliances and users can continue to edit it so it will increase security in the use of electrical appliances and more on a daily basis.