Inspection of Fire Prevention Measures for Electrical Circuits Measures to prevent short circuit of electrical lines: For wires within two meters, steel pipes or rigid plastic sleeves should be used to protect and prevent overload of electrical lines: iron wire and copper wire should not be allowed to replace fuses, power consumption time should be adjusted to prevent overload of electrical lines and excessive contact resistance of electrical lines: copper wire and aluminum wire should be connected, copper-aluminum transition joints should be adopted, and joints with larger current should be adopted.Oily or oxygen welded joints shall be used and tightened after joining with elastic sheets. Setting requirements of indoor wiring: Choose appropriate wires, and keep appropriate distance between wires.