thick black three-core copper wire at construction site close-up against a blurred bare wall. the location of the cut electrical

power wire threecore copper cable electrical wiring wall private house stationary bare walls without repair cut electric section construction electrician insulation winding sheath deenergization polyvinyl chloride thermal conductor grounding thickness connection industry voltage blurred background shutdown mortgages sockets switch thick black three-core site close-up against location prepared for socket aerated concrete wall wiring