Significant differences between the crane and other general machine is huge, combination work movable metal structure and multi-agency. Characterized by intermittent rotation job, lifting loads inhomogeneity, inconsistency agencies motion cycle, ranging from the time of the institution of the load, the people involved with the job, etc., but also increased the complexity of the crane operation, security risks more great danger range. Accident-prone points, the consequences of serious accidents, thus crane safety is particularly important. Electrical equipment box is a modern factory, one of the common company installed the necessary equipment, which, when installed, must follow the principle of following the electrical box installation: 1, each household household distribution box should be located leakage protection, leakage action current less than 30mA, there is overload, overvoltage protection, and the separation of the number of road outlet, respectively, to control lighting, air conditioning, sockets, kitchen, bathroom, etc., it should ensure that the load circuit the normal use of heavy lifting equipment installation, sub not exceed the capacity of the route into the family line capacity. 2, the switch should be installed for the 1.3m height and frame distance 150mm-200mm, height of not less than 200mm socket lifting equipment, the same panel in the same area may not have obvious height difference lifting equipment relocation allowance should lead wire box for 150mm. kitchen should use splash socket lifting handling equipment company, installed above the countertop height of at least 300mm. 3, earthing protection should, inter wire and wire-to-ground insulation resistance value should be greater than 0.5MΩ, metal wire, metal hose, metal pan distribution boxes have ground fault protection; kitchen metal ceiling height of less than 2.4m and lamps have a metal grounding protection equipment. lifting handling | Taian lifting equipment | Lu leading technology provided by Shandong Lu mechanical equipment installation Limited. Shandong Lu Machinery Installation Co., Ltd. (www.sdlzqz.com) strong, credible, in Jinan, Shandong industrial maintenance, installation and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Shandong Lu machinery and you work into the brilliant, for a better future!