close-up of two three-wire wires attached to the wall. wiring of electrical wiring on the wall of aerated concrete bricks. power

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 close-up two three-wire wires attached aerated concrete bricks black braid for wall bricks sockets