insulated tools transformer clean transformer perform maintenance wellventilated regular maintenance arc flash diagnostic tools circuit breakers power lines loose connections insulation degradation damage corrosion tight secure electrical connections lightning strikes safe reliable levels suitable vital role prevent damage prevent contact prevent overheating prevent settling winding damage infrared cameras transformers weight stable foundation potential hazards potential hazards testing identify potential problems safety standards service distribution transformer installation ensure proper cooling prevent environmental contamination gloves safety glasses winding problems cleaning contamination infrared thermography fire risks foundation distribution transformers play follow lockouttagout procedures oil leaks promptly detect hot spots businesses proper installation high voltage electricity