AC DC electricity energy old pile pillar pole post power power pole power stack stack supply support vintage power pole voltage wire rural pole clouds electric electric grid electricity grid electricity pole landscape meadow poles power grid power transportation sky tower utility danger electric power electricity power lines insulators power pylon strength Tension wiring cutter cutting power disconnecting house wiring accident angles broken damage damaged dangerous dangling equipment external height heights high machinery overturned perspectives power-lines power-pole repairing repairs replace replacement replacing risks risky safety snapped snapped-off-pole-part surface surfaces trailer up-high work workman workmen 740870 783888 cables electrical lines wires transformer demand infrastructure construction crane job telephone Utilities workers working cable copyspace evening insulator pylon sunlight transmission wire wooden