Contact with overhead power lines—Many construction sites have existing or temporary power lines running above them. Crane operators or workers on ladders, scaffolding, or other elevated devices, may inadvertently make contact with those lines.
2. Contact with live transformers or unprotected wires—Electricians working on a construction site may leave transformers or wires unprotected and fail to provide notice or warning of the potential dangers.
3. Exposure to faulty or defective electrical tools, machinery, or equipment—Construction tools and equipment are often in a state of disrepair. Additionally, workers may attempt to rewire or repair electrical tools or remove safety mechanisms that protect others from high-voltage electrical current.